This is a linkpost for http://kajsotala.fi/2016/11/finding-slices-of-joy/
This is derivative of meditative insight practice. You may be interested in looking into Vipassana practice. With some time spent building concentration skills this kind of sensation noticing practice is far more powerful (think, LSD-like power) and can be extended to get you a lot more than just joy
Yeah, I've done Vipassana which I'm pretty sure has made the practice a lot easier.