Yeah I've kind of actually learned to do that. It's just not obsessing CONSTANTLY about things in the future that may not happen.
If I'm in a lecture in college, I usually find myself freaking myself out. Wondering how far I am from the car, what everyone would think if I left the lecture, worrying that I shouldn't go out because then I'd miss the lecture, not wanting to feel that panic and that need to run to the car.....GAAAAH!
So I tell myself 'I am present'. I am not panicking RIGHT NOW and that is good. I feel ok now except for the fact that I'm talking myself into a panic. So if I just talk myself into a calm state instead I can continue feeling good and now panicking. I guess that's what I'd call living in the moment.