https://spokengoods.com/ - a podcast summary site that also pulls out product mentions. I kept forgetting which books were mentioned while I was out doing stuff.
Feeling Good and/or Feeling Great by David Burns. It should be on everyone's bookshelf, imho. It has the exact step by step process that you're looking for.
I would focus on the games first, and then spin up the LLC if one of them takes off. Otherwise you just have the maintenance and fees of the LLC which is a distraction.
Be an organ donor. Donate blood on a regular basis. Skeptoid had a podcast today that talks about blood donation with some interesting tidbits about shelf life of platelets and whole blood. (5 days vs 42 days)
Consider activities that broaden your perspective, e.g. reading a biography or travel somewhere.
Consider journaling deeply about areas that trouble you, whether recent or distant past. Also consider journaling in detail about the best possible outcome for yourself. Forcing yourself to organize thoughts in writing can help understand confusing situations.
If therapist isn't working, find another one. It's totally normal to try several.