Why do some people easily refuse temptations, while others are unable to resist them? The author of the book, having collected the latest scientific data, proves that people who find it difficult to resist temptations are physiologically and biochemically different from those who do not have these problems. Due to genetic characteristics, neurotransmitters - substances that regulate brain function - are distributed and work differently in such people. There are different types of disorders: the owners of some constantly lack the feeling of pleasure, while the owners of others experience such strong sensations from pleasant things that they cannot resist them. But the result is the same: the “animal” part of the brain - the limbic system, which requires pleasure right here and now, more often takes precedence over the most "smart" zone - the prefrontal cortex, which remembers that momentary pleasure threatens larger life plans. There are many tests in the book, and although based on their results it is impossible to draw conclusions about whether you have “bad” variants of “self-control genes” and how their influence stacks up with environmental factors, based on indirect signs it is still possible to guess which systems are in your the brain doesn't work quite right. The last part of the book is recommendations on how you can effectively resist temptations specifically for you and achieve long-term goals, despite problems with self-control.