Life is short...
Life is short and tricky; in your 20's, you always believe that you will be young forever and nothing can stand against you; in your 30's you realize that's not true; however, you win wisdom and realize that many things you did were wrong. It makes me think that older people always wish to go back and fix a few thinks in their lives like not drinking too much, eating too much, etc. Things that unfortunately are too late now to reverse. That's why if you are young, think twice on the actions you are doing that could affect your life for the rest of its endurance.