People live in the future and past because the present is painful. They escape. It becomes a habit. The person might not want to even have feelings. Not living in the present helps with this. I had to learn to live in the present. It is hard to do at first because you become aware of your feelings and all the other things that you don't want to sit with and accept. You learn how to do it by first becoming aware of all of these uncomfortable things that you want to avoid and then working on them one by one, clearing them out so that you can sit in comfort for once.