Does counselling work? 5 numbers worth knowing first

Counselling works, on average and for most people, and the research backs that up, but “does it work” is the wrong question to stop at because the size of that effect, how long it takes to show up, and what actually drives it are where the useful answers live. I’ve pulled together the actual numbers below rather than the usual “studies show” hand-wave, because I think you deserve to know what you’re paying for and what to realistically expect from it.

Key takeaways

• NHS Talking Therapies recorded a national recovery rate of around 50% for completed courses of treatment in 2024–25, with counselling for depression specifically showing a 43.0% recovery rate and a 59.3% reliable improvement rate.
• When researchers stripped psychotherapy studies down to only the highest-quality trials, the effect shrank from a large 0.74 to a more modest 0.22, and the number of people who’d need treatment for one to properly benefit rose from 2 to 8, which tells you the truth sits between the hype and the scepticism.
• A 2023 meta-analysis pooling 415 studies and over 71,000 participants still found a genuine, medium-sized effect for psychotherapy treating depression, and 90% of the possible ways of slicing that data landed on a result big enough to matter in real life.
• Research on dose-response consistently finds that meaningful, lasting change tends to need somewhere between roughly 8 and 18 sessions, depending on the study and the setting, not the 6 sessions often offered as a first course.
• The strength of the relationship between you and your therapist predicts your outcome more reliably than which named method they use, and that finding holds up across hundreds of studies and multiple diagnoses.
• In real-world NHS data, the average number of sessions people actually attended was under 5, and improvement rates in that everyday data were far lower than in the controlled trials, which suggests a lot of “counselling didn’t work for me” is actually “I didn’t get enough of it.”

Does counselling actually work, or is that just something therapists say?

It works, and I’ll say that plainly because I think too much hedging around this question does people a disservice when they’re trying to decide whether to spend money and time on it. NHS Talking Therapies reported a national recovery rate hovering around 50% for people who completed a course of treatment in the 2024 to 2025 reporting year, and counselling for depression specifically came in at a 43.0% recovery rate with a 59.3% reliable improvement rate, which puts it broadly in the same range as CBT on the same measures. None of that means half the people who try counselling are “cured,” because recovery in this context is a defined clinical measure based on standardised symptom scores dropping below a set threshold, not a promise that a problem disappears completely and never resurfaces, and I want to be upfront about that distinction rather than let a tidy percentage do more work than it should.

If you’re weighing up whether to book, I offer a free 20-minute consultation before anyone commits to anything, and you can grab a slot here: book a free consultation.

How strong is the evidence, really?

This is where I think most content on this topic gets lazy, because it either quotes one flattering statistic or dismisses the whole field, and the honest picture needs both numbers sitting next to each other. A widely cited reanalysis published in Psychological Medicine went back through the psychotherapy-for-depression literature and separated out the highest-quality studies, the ones with proper control groups and low bias, from the rest, and found the effect size dropped from a large 0.74 in the lower-quality studies down to a more modest 0.22 in the rigorous ones, with the number needed to treat rising from 2 to 8. Effect size here just means how big the gap was between people who got therapy and people who didn’t, on a scale where anything above roughly 0.5 counts as a difference you’d actually notice in someone’s life, and “number needed to treat” means how many people would need to go through treatment for one of them to see that benefit. That’s a real, sobering downgrade from some of the more triumphant claims you’ll see floating around, and I’d rather hand you that than pretend the research is uniformly glowing.

But it isn’t a dead end either. A 2023 multiverse meta-analysis, which is a method that runs thousands of different reasonable ways of analysing the same pool of studies rather than picking one, pulled together 415 studies and over 71,000 participants and still found an average medium effect size of 0.56, with 90% of those thousands of analytical approaches landing on a result big enough to be clinically meaningful. So the fairest summary I can give you is that counselling for depression and anxiety has a real, positive, moderate effect that’s smaller than the most optimistic figures suggest and larger than the most sceptical takes suggest, and both of those groups are quoting real research, rather than just picking the study that flatters their argument.

How many sessions does it actually take to feel a difference?

Longer than the standard NHS offer, in most cases, and I think that’s one of the most underreported facts in this whole conversation. Dose-response research, which tracks how outcomes change session by session across large groups of clients, has consistently found that somewhere between about 8 and 18 sessions is typically needed for half of clients to reach reliable, lasting improvement, with the exact figure shifting depending on the setting and the severity of what’s being worked through. A widely cited systematic review of routinely delivered therapy found the useful range sits between 4 and 26 sessions depending on the person and the problem, with weekly sessions producing faster progress than fortnightly ones. And here’s the part that I think explains a lot of the “I tried counselling and it didn’t work” stories you hear: naturalistic data from a national database of over 6,000 real clients found the average number of sessions actually attended was under 5, with an improvement rate of only around 20%, nowhere near the 57 to 67% improvement seen in the same research when people received a properly dosed course of around 12 to 13 sessions. That gap isn’t a mystery, it’s arithmetic. If you can find more on pacing and structure, our page on how long counselling actually takes goes into more detail on what shapes that timeline for different people.

Does it matter which type of therapy you choose?

Less than you’d think, and this is the finding I find genuinely useful to hand to people who are stuck agonising over CBT versus counselling versus something more integrative before they’ve even had a first session. What predicts outcome more consistently across hundreds of studies, multiple diagnoses, and different treatment settings is the strength of the therapeutic alliance, meaning how well you and your therapist actually get on, trust each other, and agree on what you’re working towards, and that finding has held up in meta-analysis after meta-analysis since the 1990s. That doesn’t mean the method is irrelevant, because some approaches are better evidenced for specific, narrowly defined problems, but it does mean the person sitting across from you matters at least as much as the letters after their name or the model printed on their website. I work from an integrative approach precisely because I think forcing every client through one fixed method regardless of fit works against the actual evidence on what helps.

Why doesn’t counselling work for everyone, even when it “works” on average?

Because averages describe groups, not you, and because a meaningful chunk of the gap between “counselling works” and “my counselling worked” comes down to dose and fit rather than the whole enterprise being a con. The data above shows people who attend too few sessions, who don’t feel a solid connection with their therapist, or whose specific circumstances weren’t well represented in the research, can genuinely have a different experience than the headline statistics suggest, and none of that means the numbers are wrong, it means they’re describing an average person who doesn’t exist. If you’re someone whose situation sits outside the standard studied population, for instance if you’re neurodivergent, LGBTQIA+, or living the kind of life that doesn’t map neatly onto a clinical trial recruited from a GP surgery, that’s worth naming honestly rather than assuming the general statistics apply to you in exactly the same way, and it’s a big part of why I ask about that context early rather than treating every client like an identical case study.

Frequently asked questions

Does counselling actually work for anxiety and depression?

Yes, on average, with NHS Talking Therapies reporting recovery rates of around 50% and independent meta-analyses confirming a genuine, moderate positive effect, though the honest size of that effect is smaller than some of the more optimistic figures you’ll see quoted.

How many sessions of counselling do I need before I notice a difference?

Research suggests somewhere between 8 and 18 sessions for reliable, lasting change in most people, though this varies by individual circumstances; our page on how long counselling takes breaks this down further.

Does it matter which type of therapy I choose, like CBT versus counselling?

Less than most people assume. The quality of the relationship between you and your therapist is a more consistent predictor of outcome across the research than the specific method used, though some approaches suit specific, narrowly defined problems better than others.

Is private counselling more effective than NHS talking therapies?

There isn’t robust published data directly comparing effectiveness rates between the two, since most of the large-scale outcome research comes from NHS services; the meaningful differences tend to be in waiting times, session number, and choice of therapist and approach rather than a proven gap in outcomes.

What if I’ve tried counselling before and it didn’t help?

It’s worth looking at how many sessions you actually had and how well matched you felt to that therapist before concluding counselling itself doesn’t work for you, since both dose and fit are shown in the research to matter as much as, or more than, the general approach; if you want to talk through what didn’t land before, you can get in touch or read more about how I work.