Being a curiousity junkie, I'm learning to remember that there's a subtle but large difference between undisciplined curiosity and disciplined curiosity -- which is the difference in confusing activity with results.
Most definitely. The one thing I try to be constantly aware of is whether I'm trying to learn too much at the same time, and whether what I'm learning is applicable to what I'm trying to achieve. Occasionally, I'll reward myself with something else that I'm interested in that isn't "pragmatic" per se. All about finding your personal happy balance between learning something applicable vs satisfying that insatiable curiosity .