Epictetus wrote Enchoridian centuries ago.
The paragraph where he mentions about what things we have in our control and we don’t have has been a principle for me. Luckily I read the book.
Many things we do in our life with our best efforts. But if we decide the result or expect the outcome in our favor and it goes opposite we get miserable. At times anger, sadness, misery takes over.
Going by Epictetus, I know it is a difficult life to lead. Leaving the outcome aside and focusing on putting the best effort. Life is more contend. We do not regret not trying.
Life with action as prime motivation does more wonders that a goal-driven one.