Why do smart people sometimes act illogically and recklessly? For example, do they waste time on secondary tasks, forgetting about the main thing? Do you burden yourself with work that you cannot complete? Do they quarrel over trifles every now and then? Do they react painfully to criticism? It turns out that the cause of these and other problems is not only human psychology, but also the peculiarities of the structure of our brain, which cannot be changed, but can and should be taken into account both at work and in everyday life. The author explains why our brain feels overloaded and what to do to use your thinking capabilities to the maximum; how to remain calm in any situation and make the only right decision; how to increase the chances of insight, which is so necessary when solving complex creative problems; how to learn to influence others without conflict.