Well, Im 67. I retired four years ago, sat around for three months, and got bored. Even fishing four or five days a week, I still felt like I should be doing something. I took a part time job helping a friend with a home repair business. As an example, this week I hung two doors, put in a new kitchen faucet, and helped my buddy install a new garage door. I work three days a week, Tues, Wed, and Thurs, around 20 -24 hours per week. It's good because I keep busy, get exercise, and still have four days off each week for fishing, or family time. As we get older it's important to stay busy. The worst thing you can do is retire, then sit in front of the TV all day.