Do the basic healthy stuff: drink water, exercise every day (not a walk, get your heart rate high), lift heavy weights, don't eat loads of sugar. I struggle with this everyday, but have noticed a huge difference in my stress levels lately as I've made huge strides in this area.

^ If you're not doing that, I believe a lot of the "advanced" stuff like meditation is a band aide to a biological problem.

My #1 past the basics is thankfulness. An attitude of deep gratefulness for the gifts of life, the people around us, and the freedom of the Western world always puts my problems in perspective. Life is as good as it is difficult.