For me it's all about living the moment, the minute, the second. Enjoy as much as you can, don't look back and ask yourself what could have happened if... or what if I've done something different. The moment is NOW, the past is the past, learn from it and move on. Don't regret anything, take what happens as an experience. Be happy and confident of who you are, never pretend to be someone you're not.
My way of living life and so far... it's been great.