What happens next?

How to stop breaking promises
Think before you speak.
This is a difficult thing to do for many people, mainly because it sounds so simple but is actually quite complicated. Sometimes you say something without thinking it through properly.
By the time you realise you shouldn't have said it, the person you said it to has taken it seriously or is relying on it. To avoid this situation, and avoid making impossible promises, don't open your mouth if you haven't thought it through.