Some times you have to get rid of your own thoughts and expectations of life...before you can really enjoy it. Every thing won't always go the way you want...nor will every situation be the one you want. But a lot of the time, what you want and what you need are two entirely different things.
Be thankful. Could you start your day with a simple prayer of thanks? All it would take from you would be 2-3 minutes of telling God thank you for letting you see the next day, thank Him for protecting you and keeping you out of harm's way.