therapeutic
My focus is mostly on bonsai these days. I can stand and work on a tree or trees for hours, only coming out of the state of mesmerization 1) when I need the restroom 2) when DW thinks to tell me it's dark. I'm really reluctant to use the word 'zen', but that's precisely what it has become after 40 years of practice.
Zen: a state of calm attentiveness in which one's actions are guided by intuition rather than by conscious effort. That about nails it.
Al