Well I think a lot about my future but I don't think that's a bad thing.
I believe that happyness comes from reaching a goal you set yourself
The feeling I get when I reach something is uncomparable.
Thinking about the past because you try to reflect it and learning from it, for me is great. Its like a long long way to a goal, but every milestone I make, makes me a happy person.
A question, why do you have this "fear"?
It does come from somewhere, you may not have realised just yet
I had that kind of fear in moments of my life where I thought: "this is not the place I want to be at"