I was the same way, retired, got all the honey-do stuff done, my wife and buddies were all still working, and fishing was no fun alone, or even riding the rocket. I got bored too.
I did not want to go back into the stressful life I had, but when a friend asked if I wanted to work 2 or 3 days a week. I said sure. So Now I have been back to work for 5 years headed to 6. 6 months out of the year, I get on a zero turn mower, put on my headphones, try to stay outta the flowers and ponds. And I love it no stress, @ $1000 week extra income. My wife retired last year and joined my crew, we have a good life, get 6 months of the year to do what we like, and 6 months extra money. We both enjoy it a lot. If you want to work or have to work make it something you enjoy.. Best of luck to you !
OH yeah... Nice garage !!