Do you know that the brain not only works constantly, but most of the time it also works against you? Anet Prehn and Kjeld Fredens compare it to a jazz band. If you do not understand the basic principles of its work and do not learn to “conduct” it, you can remain just a spectator in the hall and watch how your life passes by, and you do not have time to adapt to it or react correctly in time. It's time to transform your brain from a rival to an ally and make your mind flexible. Your brain can do a lot. Find out how to make the most of it. Published in Russian for the first time.