I don't really believe in the supernatural but there are some things that I have found pretty beneficial but not miraculous or anything.
Interested what /sci/entists have to say on the matter.

Number 1 is meditation of all sorts including prayer and active (think Yoga/Tai Chi) and passive (reading scripture, focusing on the breath).
Really helps me relax a lot and be a better person.
It's not a miracle or anything but its extremely helpful.

Number 2 is group worship and chanting.
The intimacy is so nice for peace and community.

Number 3 is nonaddictive drugs are fun to relax.
Keep it in moderation maybe only smoke a joint once a month really though.

Anything else?