Comment by lvl100

I once took a job that I regretted taking on the very first day. I contemplated quitting that same day but stuck it out for many years thereafter. Turns out staying in that job WAS the career ending mistake. It killed my career, family life and even health. It takes a lot of effort to recover from these career mistakes even if you have spectacular resume and background. Number one rule in avoiding this is to never take such a job in the first place.