"In the end we only regret the chances we didn't take." So be risky because you would rather look back and say I can't believe I did that instead of I can't believe I didn't do that. I do regret that amazing chance that I didn't take.
You will never have this day again so make it count. Engage in things that suit your purpose. Leave the petty battles to those that choose to live in the noise. Make the moments count and show the people who are most important to you how much you care.