There is a theory that the moment, right where you are sitting now, contains everything you need to feel perfectly happy.

I don't buy it.

Sure, there's a lot of anxiety and misery that would just drain away if you take a few deep breaths, stretch, and stop demanding what you don't really need. But what if The Moment happens to contain, say, a hornet stinging you? Or the experience of conviction of sin? I don't think humans are capable of being happy all the time; it's not part of our design. In the succession of present moments, some of them are bound to be less than perfect, and the best one can do is bear legitimate suffering.