I haven't had it "get better". Most the things I do make it bearable, and help to keep it from being a debilitating, acute pain that puts me out for a few days.

I do have to echo Yaa101 though: mobility exercise and stretching help, and my chiropractor helps counter some of the persistent pains. Stretches that target my legs and especially my hips are critical to helping the lower back relax and not hurt.

Ironically, the least pain I felt was when I played volleyball with some friends for 3-4 hours every weekend for a month or two.