What Is Mindfulness? What the Science Says and How to Start Today
What mindfulness actually is, what the science supports, and simple ways to start that do not require sitting still for an hour.
Reviewed by Michael Callans, MSW 
About this tool
Mindfulness is the practice of paying attention to the present moment on purpose, with openness and without judgment. The most widely used definition comes from Jon Kabat-Zinn, who described it as 'awareness that arises through paying attention, on purpose, in the present moment, and non-judgmentally.' In practice it means noticing what is happening right now, your breath, your body, your thoughts, your surroundings, without getting swept away by it or rushing to fix or label it. It is less about emptying the mind and more about changing your relationship to whatever is in it.
Although it has roots in Buddhist contemplative traditions, modern mindfulness is taught in secular, evidence-based forms. The best known are Mindfulness-Based Stress Reduction (MBSR), developed by Kabat-Zinn in the late 1970s, and Mindfulness-Based Cognitive Therapy (MBCT), which combines mindfulness with CBT. These are structured programs, not vague relaxation, and they form the basis of most clinical research on mindfulness.
The evidence is genuinely promising but worth describing accurately, since mindfulness is often oversold. Well-designed studies and meta-analyses find that mindfulness-based programs produce moderate improvements in anxiety, depression, and stress, and MBCT is recommended in several clinical guidelines for preventing depression relapse in people with recurrent episodes. The effects are real and meaningful for many people. At the same time, mindfulness is not a cure-all, the quality of studies varies, and it is not the right first-line treatment for every condition. It works best as one tool among several.
It also helps to clear up common myths. Mindfulness is not about stopping your thoughts; a wandering mind is normal, and noticing the wandering is the practice. It is not necessarily relaxation, though it can be calming; sometimes it means sitting with discomfort. It is not religious in its secular clinical forms, and it does not require sitting cross-legged for long stretches. You can practice in two minutes while drinking coffee. The skill is simply returning your attention, gently and repeatedly, to the present. For most people, short and consistent beats long and rare.
It helps to know what the research actually tested. MBSR was originally developed for chronic pain patients and follows a set format: eight weekly classes of about two and a half hours, one full day of practice, and roughly 45 minutes of home practice most days. Casual, occasional practice is still worthwhile, but it is a lighter version of a program that was studied at a specific dose. The most common mistake people make when starting out is treating a wandering mind as a failure and quitting; the more useful mindset is to expect the mind to wander and treat each return of attention as the practice working, not as a setback.
Mindfulness is not a substitute for treatment when anxiety, depression, or stress are severe, persistent, or getting in the way of daily life. If steady practice over several weeks brings no relief, or symptoms are already significant, it is worth talking with a licensed therapist, including one trained in MBSR or MBCT; Psychology.com's therapist directory (/therapist/) can help you find one. If you are ever in crisis, the 988 Suicide and Crisis Lifeline is available by call or text at any time.
References
- Kabat-Zinn J. Full Catastrophe Living. New York: Bantam Books; 2013.
- Goldberg SB, Tucker RP, Greene PA, et al. Mindfulness-based interventions for psychiatric disorders: a systematic review and meta-analysis. Clin Psychol Rev. 2018;59:52-60.
- Kuyken W, Warren FC, Taylor RS, et al. Efficacy of mindfulness-based cognitive therapy in prevention of depressive relapse. JAMA Psychiatry. 2016;73(6):565-574.
- Kabat-Zinn J. An outpatient program in behavioral medicine for chronic pain patients based on the practice of mindfulness meditation: theoretical considerations and preliminary results. Gen Hosp Psychiatry. 1982;4(1):33-47.
Cite this source
Psychology.com. (2026, September 14). What Is Mindfulness? Psychology.com. https://psychology.com/tools/what-is-mindfulness
What Is Mindfulness? FAQ
What is mindfulness?
Mindfulness is paying attention to the present moment, on purpose, with openness and without judgment. It is about changing your relationship to your thoughts and feelings rather than emptying your mind.
Does mindfulness actually work?
Research finds mindfulness-based programs produce moderate improvements in anxiety, depression, and stress, and MBCT is recommended for preventing depression relapse. The benefits are real for many people, though it is a helpful tool rather than a cure-all.
Is mindfulness the same as meditation?
Meditation is one way to practice mindfulness, but you can also be mindful during everyday activities. Mindfulness is the quality of present-moment, non-judgmental attention; meditation is one structured way to train it.
How do I start practicing mindfulness?
Begin small: follow three slow breaths, do one routine task with full attention, and gently return your focus whenever your mind wanders. Short, regular practice is more effective than occasional long sessions.
Can mindfulness help with anxiety?
Yes, in a measured way. Mindfulness-based programs produce moderate reductions in anxiety symptoms in well-designed studies, with MBSR and MBCT having the strongest evidence. It works best alongside other care for significant anxiety rather than as a stand-alone treatment.
What is the most common mistake when starting mindfulness?
Treating a wandering mind as failure and giving up. A wandering mind is normal, and noticing it and returning your attention is the actual practice, not a sign you are doing it wrong. Consistency also matters more than length: a few minutes daily beats occasional long sessions.