I started working for a paycheck with SS deductions in 1979. In some way, shape, or form, I have either worked full time, part time, or went to school full time (sometimes more than one of those at the same time) ever since.
In 2012, I got the boot from Corporate America, and went into consulting. I made good money consulting, but could never keep myself fully employed that way, so it was kind of part time, with my property management as another part-time job. I left the consulting company I primarily used in 2016. I have done a few small paying gigs since then, but consider myself retired from consulting.
In 2017, I still had 2 investment properties, which kept me pretty busy (old buildings), but I made decent money. I sold the 3 family last year, and today, listed the 2 family with a realtor. With any luck, it will sell in a few months, and I will be fully retired.