Live your live, really live it. Spend time with your loved ones and friends, ride bikes, get p*ssed. Don't sit around worrying.
One day, you'll breath your last and when you do your life will probably flash before your eyes. Do you want memories of great rides, time with friends and family, great adventures, beautiful sunsets and the like, or would you prefer to remember all the time you spent worrying about what is happening now and it's still happening anyway?