For a while I did the shopping thing, but that was some time ago. One thing I did a lot was to obsess over something that would interest me. We have talked about a racing mind. I must have done this over a miriad of topics.
I stayed preoccupied with big game hunting, African history, pistol and rifle shooting, fishing of all types, collecting firearms, motorcycles, pool, art, music, high risk investing, aviation, weight lifting, swimming, work, conspiracy theories, world war 2 history, roller skating, even unicycle riding to name a few that pop into mind.
Then, of course there was drugs and alcohol.