Before I get into the importance of keeping your word, let's explore some of the reasons for not doing this. If you are a person who doesn't do what you say you will do, what is behind this behavior?
God knows that we have hope tanks. He know this about us better than anyone. That's why he gave us a Book full of promises, packed with vivid descriptions of what we have to look forward to as Christians.
As you continue with your personal changes, take time to assess what's pulling you forward and what might be holding you back. How's your follow through?