A lot of Christians and non Christians alike talk about "living in the now", and being "present", but they never explain it, it's always coated in a shroud of mystery. What does this mean - Biblically - except for not worrying about the future (or obsess about past)? Is that it? Am I missing something big and mysterious here?
Whenever people try to make a very obvious thing "mysterious", know that it is coming from Satan and avoid it. After all, everybody is living in the now. You can only take an action now. There is no other option.
It is true that the Lord works in mysterious ways, but that is regarding his miracles only, which go beyond our understanding, not simple daily life matters like living in the now. Do not be deceived by people who overcomplicate simple matters. They are usually trying to make a buck or two by tricking you into putting them on a pedestal to pay for "full understanding" of the "mystery". On the other hand, people of the faith always teach meekly for free, keeping what is simple simple. They do it for God, not to make a buck or gain status over you.
Godspeed.