I have had three "careers", if you don't count the first 6 years of "paper boy".
I started delivering papers at 10yrs old, and gave up my four routes at almost age 17.
Then I went to "WORK".
General minimum wage ($2/hr at the time) labor at first, then got on with a motorcycle dealership as a mechanic.
(Career #1). Motorcycle mechanic. Worked for several dealerships and independent shops for about six years or so. Then a brief stint as a franchise manager for a Tune-Up chain.
Career #2: Went to work in the general services department of a rural county, doing auto/truck/equipment mechanical work, welding and hydraulic system repair and installation. That lasted 5 years or so, overlapping with career #3.
Career #3: Information Technology - "IT".
PC tech at first (starting in about 1983-ish?), then network tech, then systems, operating systems, management, and eventually director of a division. 26 years or so, then retired in 2013.
Current career is in beer conversion (ale-to-piss), nap taking, yard work, auction bidding, eBay selling, hobby metal-smithing and welding/fabrication. Oh, and a side of beer brewing and jewelry making and grandchild rearing.