If I haven't already said it loudly enough, I'll say it AGAIN. LIVE!
Live as if you'll never see another tomorrow. There is someone reading this post who may not see tomorrow. I may not. It could be your father, or her cousin. But none of us is guaranteed one more breath.
So live, live like tomorrow will never come! You won't regret it. What you will regret is if you DON'T.