Living in the present is making the most of what you're doing right now. Talk to people you meet instead of passing them by on the way to somewhere. That's the biggest tell sign of a person who lives in the present. You meet them from time to time. The guy sitting next you on the bus who strikes up a conversation like he's known you forever.

That's the guy who appreciates the little garden somebody planted next to the bus stop that nobody else even notices is there. Make the most of now.