Do not rely on promises made because they may not hold their value. An agreement, commitment, or contract may not hold fast. While the intention was honorable when the promise was made, circumstances have changed.
Broken promises are validation that this is not the best option for you now. If you were the one who made the promise, recognize that distractions and diversions were physical indicators that you were heading in the wrong direction. Do not compromise or look for middle ground. This agreement would not have provided the outcome you were expecting.