I got myself fired from a job a few years ago, and it occurred to me recently that seasonal affective disorder (SAD) was probably a contributing factor. I'd been feeling low and bored for quite a while leading up to the event, working in a darkened room with a desk lamp, as no one wanted the fluorescent lights turned on.
I like the_economist 's advice in general, and particularly the bit about getting outside, but suggest that longer meditation is fine, too, and perhaps try bodyweight workouts before getting into barbell/dumbell training. I just got a copy of Convict Conditioning and find it and the idea of bodyweight exercise compelling, and you can't beat the price. (See the FAQ at /r/bodyweightfitness for more.)
I like the_economist 's advice in general, and particularly the bit about getting outside, but suggest that longer meditation is fine, too, and perhaps try bodyweight workouts before getting into barbell/dumbell training. I just got a copy of Convict Conditioning and find it and the idea of bodyweight exercise compelling, and you can't beat the price. (See the FAQ at /r/bodyweightfitness for more.)