As such is the case, take what you can get when it’s raining and do your best with it, and store up for the drought that might be lurking just around the corner. Don’t get cocky when things are going well, and don’t get discouraged when you’re waiting for the next job. Ideally, both the frequency and duration of dry spells will decrease as your career progresses. And if you’re lucky enough to reach that point, please don’t take it for granted.
P.S. I’m writing this between rainy seasons, with the advice for myself as much as for anyone else.