I took career assessment tests, Myers-Briggs and personality tests a number of times for classes and jobs when I was in high school and college. There were a lot of questions on all of the tests asking questions about spontaneity vs. planning (Judging v. Perception in Myers-Briggs nomenclature).
I always thought of myself as spontaneous and flexible, so I answered the questions as such.
These days I think about those tests and how I actually function and while I am flexible to a point, I much prefer a certain level of structure and routine to my life.
Back when I was doing Couch to 5k, I had planned to run a 5k, a 10k, hopefully sometime do a triathlon. But I focused on the training and kept trying to bring my times down. Structure. Routine. I never actually entered a race before I hurt my knee — despite running at least 5k four times a week.
In stark contrast, my husband signed up for a 5k a mere week in advance, went out and ran it. No focused training, just went out and did it.
I never would have done that and I think I am the worse for it.