Curbing anxiety

…the anxiety you speak of comes from the fact that you are far too busy with yourself. It would be far better for you to attend more to what you are doing (painting or music), to develop your mind which is still very uncultivated and to learn the elements of knowledge which are indispensable to a man if he does not want to be ignorant and uncultured.

If you worked regularly eight to nine hours a day, you would be hungry and you would eat well and sleep peacefully, and you would have no time to wonder whether you are in a good or a bad mood.

Ref: On Education