Sometimes people leave because their ambition is larger than the environment allows. I have a story of when I did just that.

Early in my career I joined a company and I knew from day one that it was going to be an awful experience. I knew the product was going to fail, and my team seemed unconcerned about this inevitability. I hadn’t realized this in the interview. I left after six months, and I spent all of them preparing myself and searching for the best possible next move. When I looked back two years later the company no longer offered the product I was working for, and every single member of my team also left. The experience was an expensive lesson in what things I should look for in a job interview.