>>10213146there are fundamentally three axioms in life:
a) life is full of (but not made exclusively of) suffering, pain, betrayal, abandonment, greed, and many more not-nice things. it's simply unavoidable
b) you can't control what happens to you; most of your life will depend purely on luck. what you can control is how you react to things.
c) you mood doesn't change because of what happens to you, it changes because of how you react to what happens to you
so if you want to live happily, you have to accept that you are subject to luck and you can't change most of what will happen to you. so don't let your happiness depend on outside factors. be whoever that makes you happy
that's the most basic explanation of stoic philosophy i can think of