Recently, I have been very fond of a passage

You should dedicate your time to sleep, to books, to exercise, to flowers, birds, trees, and mountains, rivers, lakes, and seas, to your love for this world.

Do not waste yourself on boring people and things. When you begin to be the master of your time, you will feel the calm power that surges forth in the simplicity of life, and those anxieties and unrest will naturally dissipate.