Great article on the beneficial effects of gardening. I know it helped me feel grounded and connected to something. Success is measurable - your plants grow or they don't. But it's not failure if they don't grow - you learn and figure out better ways to go about it. Harvesting is very rewarding. It is a connection to the ground, the weather, to life - all things I feel very disconnected from much of the time.
Herbs are among the best plants to start growing in your garden because you can use them in almost every dish without being wasteful (since fresh bundles are so big at the store) and they work as preventative medicine for you while improving your health! It's a win-win!