Boss threats of bankryptcy, burnout, divorce if I resign I'm in the middle if a hardest decision of my life. I have singed an employment contract with another company and have resigned from my old one, but my old boss wants to make a counter offer ( which is not as good as the new one). He threatens me that I'll cause a bankryptcy and a burnout for him and obviously temp unembloyment for my colleagues. That might be a slight possibility, unfortunately. Should I really sacrifice my career by staying in a bad position, only to stay there for a little while and try to work out a way to exit less dramatically? I might not get an opportunity like this again and I might burn a bridge to the new company by nullifying the signed contract. 

Thanks guys.