Live life fully while you're here. Experience everything. Take care of yourself and your friends. Have fun, be crazy, be weird. Go out and screw up! You're going to anyway, so you might as well enjoy the process. Take the opportunity to learn from your mistakes: find the cause of your problem and eliminate it. Don't try to be perfect; just be an excellent example of being human.
You are now at a crossroads. This is your opportunity to make the most important decision you will ever make. Forget your past. Who are you now? Who have you decided you really are now? Don't think about who you have been. Who are you now? Who have you decided to become? Make this decision consciously. Make it carefully. Make it powerfully.
Most people fail in life because they major in minor things.
If you don't set a baseline standard for what you'll accept in life, you'll find it's easy to slip into behaviors and attitudes or a quality of life that's far below what you deserve.
It not knowing what to do, it's doing what you know.
For changes to be of any true value, they've got to be lasting and consistent.
If you do what you've always done, you'll get what you've always gotten.