If you find something very difficult to achieve yourself, don't imagine it impossible—for anything possible and proper for another person can be achieved as easily by you.
Remind yourself that your task is to be a good human being.
Do every act of your life as if it were your last.
For it is according to nature, and nothing is evil which is according to nature.
All is ephemeral, both what remembers and what is remembered.
I can control my thoughts as necessary; then how can I be troubled? What is outside my mind means nothing to it. Absorb that lesson and your feet stand firm.