Owning up to your words is hard, so be more mindful of what you’re saying, and commit less. Majority of people that overpromise don’t do that in order to harm anyone, but out of desire to please others.
Many people get annoyed by people pleasers, because they set expectations to them that never get met. They always get people disappointed due to this fact. The trick to dealing with people pleasers comes from within you. It is essential that you realize them and accept them for who they are, and stop taking them seriously. Your well being will thank you for it.