50’s male looking for information

I'm 58 now and I'm finding that I feel very much the same as the op. I enjoy my cars, but I really don't want to spend a lot of time working on anything lately. I find myself to be very self-critical, like what the hell am I doing at my age driving a heap like this? I have become the person who I once loathed, the old man who doesn't want to accept his own age and still thinks he is a teenager. The only difference is that my driving record is nowhere near what it was 40 years ago. Lol
I don't know what the answer is, but I really feel the same way about so many things. I couldn't even imagine buying a new car or truck, I would love to be able to retire and yet I know that I would be extremely bored without some kind of reason to get my *** moving every day.