21 Stoic Principles for Self-Mastery

1 - Accept and love whatever happens.
2 - Act with the reservation that what you do might not be perfect.
3 - The obstacle becomes the way; every problem has a solution, and the solution lies within the problem.
4 - Remind yourself of the uncertainty of all things.
5 - Always contemplate death to make life valuable.

6 - Consider everything as borrowed from nature.
7 - Think about bad things in advance so as not to lose your balance.
8 - Willingly accept hardship; the right and true path is always more difficult.
9 - Use every morning to prepare yourself for the day.
10 - Review each day until it becomes an evening routine.
11 - Keep a role model in mind by thinking of a guru or Stoic sage.
12 - Stoic proverbs: Keep your "weapons" close at hand.
13 - Play your assigned role well; everyone has a part to play.
14 - Eliminate what is unimportant.
15 - Forget reputation; don't just focus on fame.
16 - Live simply like a minimalist.
17 - Stop consuming news and other time-wasting matters.
18 - Conquer what is important.
19 - Be a lifelong learner.
20 - Find the answer to what you will say about your past years.
21 - Do what needs to be done.
Source: The Little Book of Stoicism by Jonas Salzgeber