Drag your head back from the future. You can't know one way or another what is going to happen. When you start worming your way forward, stop at tomorrow's sunrise, you can't know the sun is going to come up tomorrow and you can't know about your graduating yet. Just put up a barrier using the sun as your example.

Also, follow through the not graduating thing. So you have to go to summer school and make up the time, so what? Eventually you graduate. In 5 years it won't matter whether you graduated in June or in August.

Pick something "fun" to worry about. We choose what to think about so decide you're going to have too much money and not know how to spend it. What would you do with $10,000,000 dollars? When you look ahead, only look ahead to things you want and work out, when you get them, how you want it to be exactly, all the details of good things, not the vagueness of bad things that may not happen.