What are some good methods for living in the present?

It’s an annoying habit of mine that I’m just now starting to realize. Even when I’m having fun in the moment, some part of me is lost in thoughts of the past or future. I don’t want to spend my whole life in anticipation of a future that always stands ahead of me. Besides, plans for the future are only of use to those who can live in the present. What good is working for tomorrow if when I get there I still can’t live in it?