Instruments, however, I've had trouble with in the past. I took Piano for four years when I was very young, but I was too young to realize I should practice... so I got lots of basic theory and very little ability. I also took trumpet, but that REALLY didn't last long (I'm not that fond of brass - except for jazz + ska).
I'm doing very well with guitar so far, but it's only been about 1.5 months.