Promise to me, is an empty word. Whether you wish to keep or break that promise, has nothing to do with those seemingly divine words you said or wrote down. It’s something carving deep down in your mind or heart. So whatever you want to do or not, just carry on. You don’t have to speak it out, and even you did so, it’s not necessary to be bond to it. Things are always changing, the time when you made the promise won’t be the same when you want to break it.
I don’t take anyone’s promise seriously, and I am not easily make ones, though I have done that in my younger time. My moral standard is that if I’m going to break a promise for good, I will do it. Of course, even that standard can be changed some day, who knows.
Anyway, time will ultimately prove everything, so why bother to make promises, dumb ass?