So many times it can be difficult to walk away from something in favor of something new. This can be especially hard if, in the process of leaving, you are leaving behind good memories or good people. There isn't much that I can say that could make anything like this any easier, except that you should try to remember that there are better things ahead, that good memories will remain with you, and that good people will remain in your life. If there is somewhere you need to go, then go, because there is so much out there for you.