You have to evaluate how you want to work from a personal perspective and your relationship with the company you work for. I agree that constantly over-working

You have to evaluate how you want to work from a personal perspective and your relationship with the company you work for. I agree that constantly over-working can have a detrimental effect, but so can not reacting to the 'right' deadline. I've seen the result of an extremely successful startup (many years back) after the IPO and multiple stock splits, and no doubt there was a 'effort debt' being paid by the company after that period. However, I very much doubt many of those people financially regretted their efforts. They won the lottery.