For example, taking a walk is easy especially if it is just a ten minute one to get outside for a little while. Why don't we get up and do it? Because our minds quickly come up with thoughts to halt our progress. I don't want to put my tennis shoes on (as if we need them for a ten-minute walk). I'll check FaceBook first then go out (ain't going to happen). I'll make a quick phone call then go (once again, it probably won’t happen).
We'll typically piddle around until the thought of taking a walk no longer seems attractive or we’ll actually forget about it altogether. It sounded good at one point, the point when we first had the thought, then we let our minds steer us towards other things and away from something that would’ve been good for us. Like I said, the problem with things that are easy to do is that they’re also easy not to do. The trick is, think less and do more.