“Whenever a man does the best he can,
then that is all he can do."
— Harry S Truman
Based on my own experience and my own vision in watching others, I know our number one problem is how we feel about ourselves when it comes to success and failure. It is partially driven by our self-talk, and the point I want to make here is that we can be our own worst enemy at times, and to that I say, lighten up!
A good way to do that is to model Harry Truman's phrase, and just do your best and let the rest be whatever it dang well wants to be. You're good. You're covered. There will always be more to do, more to achieve, missed deadlines, missed opportunities, and plenty of success as well. Give it your best shot and let that be good enough. Because if it is your best shot, there is no more to be had, so whoever may be wanting more will just have to look somewhere else for it.