I speak from experience.
Confidence and security I guess can never come externally. I'm better at it than when I was younger, but I haven't arrived yet.
So cut some slack, put in the hours contractually necessary, but don't break your neck being at work 9AM sharp, meeting arbitrary deadlines set by management, or attending the meetings you could have just set to "tentative, but I'll probably pass, thanks".
1. Seems like it might be criminal to walk off the job if you're a surgeon in the middle of a operation, firefighter at a fire, etc.
2. Otherwise, it seems possible that you could be sued by your employer for walking off the job but criminal, probably not.
3. If my employer tried to physically prevent me from leaving work, I'd call the police immediately.
I'm guessing you'll bring in more per hour than they will, even with their bonus.
The trick there is to at least do the hard stuff some of the time so you stay up to date and ready for the next thing.
So yeah, being able to quit and leave whenever I want and take 2-3 months of break does take off a lot of weight from one's shoulders. 40 hours a week with no overtime or on-call for me! I will not be the employee with the mad bonuses when the time comes for that, but I will also be the one not on medication/suicide watch/psychiatric aid. The company will have a stable workforce that is able to care an adequate amount for the company's well-being, and I will not spend my bonus on keeping my health intact. If you don't want to employ such a person, I don't want to work for you either. Easy as that. :^)
So yeah, the essence of my comment, I would say, is that make sure you have financial get-away. You don't have to subscribe to the crazy USA way of overtime>money>health issues>expenses>overtime to compensate for expenses. Having a small vegetable garden also helps, or just caring for plants on your windowsill.
Also, cats.