If I were my own best friend I would tell myself to spend a little time with Eleanor Roosevelt…
“Yesterday is history
Tomorrow is mystery
Today is a gift”
— Eleanor Roosevelt
***Not much to add to this one. I cannot change what happened yesterday, it is history. I cannot predict what will happen tomorrow, it is a mystery. I try to remember these 3 little lines and live in the moment. But it is so much easier said (or written) than done!
If I were my own best friend... 
this reminds me of the Serenity prayer, which I repeat to myself A LOT. It is definitely harder said than done, but one day I am hoping it will “click” 🙂