I really understand where you are coming from. When I retired 9 years ago, my BS bucket was overflowing. I’ll come back to that, but first:
It sounds like you had a plan to retire FROM something, but not TO something. In other words, you didn’t have a plan for what you were going to do once you retired FROM the military. I had some loose plans on what I was going to do. Problem is, I was too efficient and fulfilled them pretty early on. I found a few new things to do, too, and did those.
Then I got bored, and decided I’d go back to work. So, to do that, I started working on some professional certifications to enter a new industry. As I was doing so, I found a variety of things I just didn’t ever want to deal with again included in the job requirements. So, I dropped that idea. The thing is, whenever I thought about having to deal with the BS again, I started feeling like I always felt on sunday evenings, or like the last day of vacation…ie, a nervous wreck. So now, I’m planning new non-work things to do to enjoy my time.
My advice to you, would probably be to keep working for a while. See if you can find something within that work that challenges you in a way you enjoy, beyond the negative challenge of the corporate bs. While you are doing that, start looking for things you want to retire TO, things that you want to do with your life that you can enjoy. A good thing to do would be to find things you can do together with your spouse, as well as things you can do or want to do alone and also things you may want to do with friends or buddies. I will say this: if you retire again with nothing to retire to, you’ll find yourself bored again.