To promise not to do a thing is the surest way in the world to make a body want to go and do that very thing.

You cannot live on other people's promises, but if you promise others enough, you can live on your own.

Some promises aren’t worth keeping.

Some things you don't have to promise. You just do.

I know it is a bad thing to break a promise, but I think now that it is a worse thing to let a promise break you.

In the first place, you shouldn't believe in promises. The world is full of them: the promises of riches, of eternal salvation, of infinite love. Some people think they can promise anything, others accept whatever seems to guarantee better days ahead, as, I suspect is your case. Those who make promises they don't keep end up powerless and frustrated, and exactly the fate awaits those who believe promises.