Staying In The Moment

So I've come to the conclusion that a huge source of my problems is thinking about the future and then thinking "i'll always feel this way, I wont' get better, what will I feel like on the trip to see my psychiatrist next week forty five minutes away," etc. I realize that I need to focus on the moment and not worrya bout the future, but the problem is in doing this. Is the best way to do this to just FORCE myself to stop thinking of the future and focus on hte moment, because this isn't easy. Right now I just wish that I could stop obsessing about my breathing, thinking about doing it, like I mentioned earlier. It was ok at work, then I'd think "i havent' been thinking about it, or have I? Better start thinking about it now..." I do this to myself, which makes it all the more depressing. Sigh.