It seems to me that it is important to have more than one passion in life, at least two, but not too many either for that would be way too time consuming, and probably dilute other passions to the point that they’re no longer passions hah. Back to my topic, having a single passion is a little dangerous, especially when that passion is also your full-time job – sometimes, heck it’s almost a certainty, we can burn out. Then what do you turn to? Do you just chill out and get bored? That’ll work for a while. Having completely unrelated passions also allows you to focus different parts of yourself to the activity at hand. For example, I love to code, however when I am depressed or too bored, then working alone on something even if it is very cool software still seems a bit too lonely. I know this firsthand. So my other passion is martial arts. Where in computing I am pretty much just using my mind (except for the occasional epiphanies where I walk around the room and make funny gestures :P), in martial arts I use both my mind and my body. And they’re so different (physically anyway, quite aware of the level of concentration needed for both), that I always have one or the other (or both under normal circumstances) to turn to.
Considering things further, it’s even better if the passions are both individual and allow group participation, this allows you to have some semblance of a social life while providing you with your own space. Ah well, just some thoughts post Christmas. The holiday feels lonelier than usual, alas.