My family doesn't want me to go abroad

A few weeks ago, I received a very good job offer from abroad. Since I'm working in a field I don't want to be in, this is a big chance for me. However, my family reacted very harshly. They said things like, "If you want to go, don't think about our relationship." Honestly, I feel guilty but this opportunity excites me a lot. Has anyone else been in such a situation? How did you decide?