Rule Number 28 is a biggie for me. I've always had a problem with this but I have to admit, painful as it's been, I'm getting better at it....'bout time, huh?........Start concentrating on the things you can control. – You can’t change everything, but you can always change something. Wasting your time, talent and emotional energy on things that are beyond your control is a recipe for frustration, misery and stagnation. Invest your energy in the things you can control, and act on them now.