I use mindfulness too, but also not limited to meditating but a way of being at all times and that is where I found the most benefit. Jon Kabot Zinn is someone who after reading his books and watching his videos helped me take that from set meditation times and carry it through out my whole day. I highly recommend for those who are interested in mindfulness.

Yoga had also been a huge benefit for me, moving meditation where I can feel connected in mind, spirit and body. And diet as Genetic has pointed out grains and gluten has helped me both mentally and physically.

Changing my perspective on the world, others and myself has had a major impact as well.