Rollins,
First off it's OK and natural to feel bad and lost over the situation. You just lost someone that was an important part of your life. Grief delayed is not grief denied, it will comeback and you'll still have to deal with it. Don't take it to heart that you are required to "be strong" all of the time, you don't. Let yourself grieve and release the hurt.
After the initial bad first days you'll start to feel alive again and notice the good things in your life. Keep in mind that the last thing your Dad would have wanted is for you to throw your life and enjoyment away just because he is gone. He had his life and this one is yours, use it as a tribute to the way he raised you.
Time will make the hurt lessen but it will never totally go away until you do. In the mean time remember the good times you had and cherish the memories you made. Don't let the loss be the only way you remember him.