The mind is a dynamic interplay of processes.
Life is too short to wake up with regrets. So love the people who treat you right, forget about the ones who don’t, and believe that everything happens for a reason. If you get a chance, take it. If it changes your life, let it. Nobody said life would be easy, they just promised it would be worth it.
Do what you can, with what you have, where you are.
The joy of chemistry is in the doing, not just the discovering.