After working in F1 for 2.5 years and winning 2 constructors titles, I am glad to be out. They push you to the extreme and then some more because they know their are 50 people who want your job. The work is interesting but very restrictive with what you can do. There are too many egos and HR will screw you around as much possible. There are people who have made it work and gave up a work life balance. 50-60 hr weeks are the norm and when doing wind tunnel testing, I would be getting closer 90hr weeks. It just burns you out and you quickly lose your passion for it.
As one of my friends said before I started working in F1, "The best thing about working in F1 is the job you have after you leave".