First off, welcome to the Genii Forum. I'm glad you found it too.
Second, "tricks" are just fine around here. I don't think we have many (if any) "trick snobs" here. It's just a word.
To answer your questions: "Spirit Lights" is something that is quite easy to learn and perform, so yes, I would say it's a good trick for you.
As for using magic for your personal therapy, I think that perhaps learning a few self-working card tricks would be helpful from an exercise point of view. There are many fine books available with good stuff in them.
If money isn't an issue, I'd recommend starting with Card College Light
by Roberto Giobbi which is available from its publisher, Stephen Minch at http://www.hermeticpress.com/product_in ... ucts_id=11
Or you can get all three in the series if that's your desire (and it saves you a little money): http://www.hermeticpress.com/product_in ... ucts_id=55
If money is an issue or you just want to dip your toe into the self-working card tricks waters first, go to Amazon and pick up Self Working Card Tricks
by Karl Fulves. It's an older book, but inexpensive and a fine start. You can find that here: http://www.amazon.com/Self-Working-Tric ... 0486233340
(There's also a good chance that you can find this book at your local bookstore.)
Once again, welcome to the Genii Forum. I think you'll find a lot of folks around here ready to answer any questions you have.
Good luck and have fun!