The author explains the development of a nervous illness:

• Initial problem, which you think about constantly and fear, which results in the release of stress hormones like adrenaline and cortisol, which sensitize your nervous system.
• The sensitized nerves create anxiety. The person begins fearing its many symptoms (high pulse, sweating, lack of sleep, etc.)
• If the person continues experiencing anxiety and its many debilitating symptoms, over a long period of time, he enters depression, as he believes that this is what the future holds for him.
• Depression brings a whole host of new psychological sensations, such as feelings of dissociation and unreality, which the person also fears, in effect releasing further stress hormones.

It’s an unending cycle of fear - stress hormones - fear of stress hormone symptoms.

The author explains that the only way out is to solve your initial problem (or reach an acceptable compromise, so you no longer think about this problem) and accept and don’t fear the symptoms of your nervous illness, so you no longer release stress hormones. Basically become fearless in the face of your illness and in everyday life - there are a couple of useful chapters on this, in particular.

For me, anxiety started going away first, then depression. He recommends eating as many different foods as possible to combat the omnipresent fatigue and to restore our nerves.

It is difficult to summarize 60 pages, but this book was a bit of a revelation for me.