"Be responsible for everything that has happened to you, do not blame others for your own problems" This is what I've learned through my own experience and something I always remind myself.
"Life is too short to worry about it." People get hung up on small issues and can't move past them. Nothing is guaranteed. I'm not going to dwell on things I can not change.
"It is difficult to say what is impossible, for the dream of yesterday is the hope of today and the reality of tomorrow." -Robert H. Goddard
Everything has its time. Time passes for everything. No matter how good or bad I have it, this doesn't change. Its comforting actually. To know your life isn't doomed for a certain set of circumstances forever. One of Gigguk's videos has something I have yet to forget. "The life up till your twenties teaches you new things and experiences will come to you when its the opposite and that early part of your life with constant new experiences was the odd part out. After education ladder's over for you, you have to look for new experiences yourself." I probably quoted it wrong because I didn't look for the video anew just for the post, but its something like that.
"Nowhere does it say tomorrow will always come, live a life you won't regret, even if the world has no tomorrow."
These words from Hanyu are also ideal - “But having competed up to this point, I’ve seen myself hit rock bottom many, many times. So in that sense, this time again, having grown up… I think being rewarded isn’t everything in life. But, right now, in this unrewarded present, I’m happy. There are many unreasonable things, but I’ll work hard to be able to face forward and keep walking, even just a little.”
"Don't worry about it." is a very simple saying that's been a constant in my life for a long time now. In many different situations, it can mean different things.
Always be overconfident, work hard and always be prepared for failure... Spoiler: ... yeah I know being over confident and being prepared for failure clashes with each other