A thinker develops theories, thinks about the "big picture" and strategy, but isn’t a hands-on person.
She doesn’t like the trial and error method.
The tinker has many hobbies, likes trial and error, and she likes variety.
The tanker gets things done. The tanker takes out the garbage while cooking breakfast and gets the kids to school, in 45 minutes flat (33 minutes with no traffic). The tanker has processes they’ve built over time and they work, for her.
Does your view of yourself match up with your actions? Does your job match up with your style?