A friend once told me to live every day as if it was the first. Discover what has to be discovered, live what has to be lived, say what has to be said. Don't look back, look forward. Don't regret the past, forgive it. Don't be held back, because you know you won't have the chance to do it again. Life is short, but I guess you all herd that one already. Don't worry about the future, because once present becomes past, it'll be gone forever. Don't just sit there, wondering what life could have been, you're the one making it. If changes have to be done, make them happen. If friendships have to be saved, it's never too late.
Just don't look back, never look back.