What's your "holy grail" for lowering high cholesterol?

I'm still quite new to working on lowering my high cholesterol, but I've begun implementing healthier lifestyle choices. Something I find to be a holy grail, because of how easy it is, is adding ground flaxseed to meals. I'm also having fun with oatmeal breakfasts. Mixing in fruits, almonds, and of course - ground flaxseed!

What has been your "holy grail" for lowering your high cholesterol? It can be a food, an exercise regime, a diet, a medication etc. One thing that can make a huge difference. I want to hear all of them!