There are limits here: if you want to quit your job then you should indeed wait until you can do it but what you shouldn’t is wait to begin. Start doing the thing that will get you out. Start now. Stop waiting.
Productive people sometimes confuse the difference between reasonable delay and true procrastination. The former can be useful (“I’ll respond to this email when I have more time to write it”). The latter is, by definition, self-defeating (“I should respond to this email right now, and I have time, and my fingers are on the keys, and the Internet connection is perfectly strong, and nobody is asking me to do anything else, but I just … don’t … feel like it.”).
When scientists have studied procrastination, they’ve typically focused on how people are miserable at weighing costs and benefits across time. For example, everybody recognizes, in the abstract, that it’s important to go to the dentist every few months. The pain is upfront and obvious—dental work is torture—and the rewards of cleaner teeth are often remote, so we allow the appointment to slip through our minds and off our calendars. Across several categories including dieting, saving money, and sending important emails, we constantly choose short and small rewards (whose benefits are dubious, but immediate) over longer and larger payouts (whose benefits are obvious, but distant).
In the last few years, however, scientists have begun to think that procrastination might have less to do with time than emotion. Procrastination “really has nothing to do with time-management,” Joseph Ferrari, a professor of psychology at DePaul University, told Psychological Science. “To tell the chronic procrastinator to just do it would be like saying to a clinically depressed person, cheer up.”