I'm nearly twenty years old and I'm finally starting to realize something, that is that life is too short and too precious to have any regrets.
So take the time everyday to say "I love you", and take the time to hug your parents because life really isn't that long. Push yourself to run for that extra mile, and push yourself to lift the extra weight because life is too short to not be the best you, you can be.
And please, leave your comfort zone. Say hello to strangers, go to concerts, sing louder songs, meet new people, build more relationships, love as hard as you can because life just isn't that long.