Worry is you misusing your imagination.
Regret is you imagining you should be somewhere else doing something else.
Show up. Be present. Do things that matter today.
A couple of quotes I like right now.
There is nothing wrong with being a wandering generality instead of a meaningful specific but don’t expect to make the change you seek. ~Seth Godin
If you are not in the process of becoming the person you want to be, you are automatically engaged in becoming the person you don’t want to be. ~Dale Carnegie