Make every day count.  Appreciate every moment and take from it everything that you possibly can, for you may never be able to experience it again.  Talk to people you have never talked to before, and actually listen.  Let yourself fall in love, break free and set your sights high. Hold your head up because you have every right to.  Tell yourself you are a great individual and believe in yourself; for if you don't believe in yourself, no one else will believe in you, either.  You can make of your life anything you wish.  Create your own life and then go out and live it.
Everything happens for a reason.  Nothing happens by chance or by means of good or bad luck.  Illness, injury, love, lost moments of true greatness and sheer stupidity all occur to test the limits of your soul.  Without these small tests - whether they are events, illnesses or relationships - life would be like a smoothly paved, straight, flat road to nowhere.  Safe and comfortable, but dull and utterly pointless.  The people you meet who affect your life, and the successes and downfalls you experience, create who you are; even the bad experiences can be learned from.  In fact, they are probably the most poignant and important ones.
If someone hurts you, betrays you or breaks your heart, forgive them, for they have helped you learn about trust and the importance of being cautious to whom you open your heart to.  If someone loves you, love them back unconditionally; not only because they love you, but because they are teaching you to love, and they are opening your heart and eyes to things you would have never seen or felt without them.