I've been told I should be in sales, but I cant stomach it.
I see where your coming from tho. Practice always makes perfect. Next time your thinking of blasting past someone who's going slower than you want to be, stop, think about it a minute, relax, and dont do it. After awhile it should become second nature. Same with making an unsafe pass, or darting through traffic in a metro area. Ask yourself if its really a good idea to dart out into that open spot where someone could pop out from a side road and demolish you.