Your therapist asks you to try something before your next session. Write down your thoughts when you feel anxious. Practice a breathing exercise before bed. Notice when you're catastrophizing and try to reframe.
You nod. You mean it. And then, somehow, Thursday arrives and you haven't done any of it.
You're not lazy. You're not a bad patient. You're in the majority.
Research consistently shows that between 20% and 50% of adult therapy patients don't complete their between-session exercises. Among adolescents, the adherence rate hovers around 50%. This isn't a minor footnote in the therapy literature — it's one of the biggest unsolved problems in mental health treatment.
Because the data on whether homework works is remarkably clear. The harder question is how to get people to actually do it.
The research: homework predicts outcomes
In 2010, researchers published a meta-analysis of 23 studies involving 2,183 participants to answer a specific question: does completing therapy homework lead to better outcomes? The answer was unambiguous. There was a significant positive relationship between homework compliance and treatment results across anxiety, depression, and substance use conditions (effect size r = .26).
That effect size held regardless of the type of therapy, the specific exercises assigned, or how compliance was measured.
A 2016 meta-analysis published in Behavior Therapy went deeper, examining 17 CBT studies with 2,312 clients. The researchers found that both the quantity of homework completed (how much you did) and the quality (how well you did it) predicted better outcomes. At the end of treatment, the effect sizes were nearly identical — g = 0.79 for quantity and g = 0.78 for quality.
But here's where it gets interesting: at follow-up (months after therapy ended), quality pulled ahead dramatically. The effect size for homework quality was g = 1.07, compared to g = 0.51 for quantity. Doing the exercises well matters more than doing them often, especially for long-term results.
The most recent 2024 review from researchers at the Norwegian University of Science and Technology and Monash University's Cognitive Behavior Therapy Research Unit estimated the causal impact of homework on outcomes at a medium effect size (d = .53). A medium effect size is roughly the difference between a treatment that clearly works and one that doesn't.
Why people don't do it
If the evidence is this strong, why do so many patients skip their homework?
It isn't about motivation. A 2023 systematic review of 25 studies examined the factors that drive homework compliance. The barriers were practical, not attitudinal:
- Forgetting what was assigned between sessions
- Feeling uncertain about how to do the exercise correctly
- Not having someone to ask when they get stuck
- Losing the worksheet or handout
- Life getting in the way — work, kids, exhaustion
The same review found that therapist behaviors play a significant role: presenting a convincing rationale for the homework, designing exercises collaboratively with the patient, reviewing homework at the start of each session, and being flexible when life doesn't go as planned — all of these predicted better adherence.
The Beck Institute — the foundational institution of Cognitive Behavioral Therapy — has noted that the field is shifting away from measuring strict "adherence" and toward understanding real engagement. It's not about whether you checked a box. It's about whether you actually practiced the skill.
The 167-hour gap
Think about it this way: if you see your therapist for one hour each week, that's one hour out of 168. The other 167 hours are where you either practice what you learned — or don't.
Research on session frequency and recovery has shown that more frequent sessions lead to faster symptom improvement. Which makes intuitive sense — more contact, more support, faster progress. But most people can't afford or schedule more than one session per week. Between-session practice is the practical alternative: it approximates the benefits of more frequent contact by keeping you engaged with your treatment goals every day.
When people do practice consistently, the effects are significant. A systematic review of mobile apps for therapy adherence found that digital tools using reminders, gamification, and guided exercises showed promise for improving compliance. The researchers identified six features that mattered most: alignment with the therapeutic approach, clear instructions, individualized feedback, progress tracking, automated reminders, and adaptation to the individual user.
What this means for you
If you're in therapy and you've been struggling to keep up with exercises between sessions, three things are worth knowing:
First, you're not failing. The majority of patients struggle with this. The problem isn't you — it's that the traditional delivery mechanism (a verbal instruction or a paper handout) isn't designed for how life actually works.
Second, the quality of your practice matters more than the quantity. You don't need to do an exercise every single day to benefit. But when you do practice, try to engage with it genuinely rather than just going through the motions. One thoughtful thought record is worth more than seven boxes checked.
Third, tools that guide you through the process help. This is true whether it's an app, a workbook, or even a friend who asks how your week went. The research consistently shows that structure, reminders, and guidance increase both compliance and outcomes.
How BridgeCalm fits in
This is the problem BridgeCalm was designed to solve. Not to replace your therapist, but to fill the 167-hour gap with the kind of structured, guided practice that research shows makes therapy work better.
Jan, your wellness companion, walks you through exercises daily — the same kinds of evidence-based techniques (CBT thought challenges, DBT grounding skills, breathing exercises) that your therapist might assign. She remembers what you've practiced, tracks your mood over time, and sends your therapist a brief summary before each session so you can spend less time catching up and more time making progress.
If you have a therapist, BridgeCalm makes their homework easier to do. If you don't have one yet, it gives you a structured way to start building real skills on your own.
[Try BridgeCalm free →]
Sources
- Tang, W. & Kreindler, D. (2017). "Supporting Homework Compliance in CBT: Essential Features of Mobile Apps." JMIR Mental Health. PMC5481663
- Mausbach, B.T., et al. (2010). "The Relationship Between Homework Compliance and Therapy Outcomes: An Updated Meta-Analysis." Cognitive Therapy and Research. PMC2939342
- Kazantzis, N., et al. (2016). "Quantity and Quality of Homework Compliance: A Meta-Analysis." Behavior Therapy. PubMed 27816086
- Ryum, T. & Kazantzis, N. (2024). "Between-Session Homework in Clinical Training and Practice." Clinical Psychology in Europe. PMC11303922
- Karyotaki, E. et al. (2023). "Integrating between-session homework in psychotherapy: Systematic review." PubMed 37104804
- Erekson, D.M., et al. (2015). "The relationship between session frequency and psychotherapy outcome." PubMed 26436645
- Ahmed, I., et al. (2018). "Mobile Apps for Increasing Treatment Adherence: Systematic Review." JMIR. PMC6604503
- Beck Institute. "What is the Status of 'Homework' in CBT, 50 Years On?" beckinstitute.org
Practice therapy skills between sessions — in just 2 minutes a day
Jan, your wellness companion, walks you through evidence-based exercises daily and keeps your therapist informed.
If you or someone you know is in crisis
Help is available 24/7. Call or text 988 (Suicide & Crisis Lifeline) or text HOME to 741741 (Crisis Text Line). BridgeCalm is a wellness tool, not a crisis service.