He had a cocaine habit some years ago but seems to have left that well in the past as well.
I remember seeing him interviewed and I think he credited his current wife (the one he just split from) with his life turning around. I don’t know what his problem is (you can’t really know just from reading things) but I hope he gets past it. I know he’s a Christian Scientist, not sure exactly what they believe, but maybe God is trying to get hold of him.