I hated my let's-say-top-five-strategy-consultancies job. Not adding value, not having fun, not making millions. 60-70 hour weeks regularly.I left four months ago to work for a charity. I virtually halved my salary. Never been happier. Out at 17.30, lost of exercise, time to cook, happy, clever co-workers. I also feel like I am making the world a slightly better place - I think this organisation is actually more rigorous than my old workplace.I have no respect for anyone who stays in management consulting. I have thought about this a great deal, and I know a lot of people in a lot of consulting firms. No respect at all. Good luck, and good night.