There is an interesting discussion between Rabbi Meir and Rabbi Yehuda in the Talmud. Rabbi Meir said that when the Children of Israel came to the Red Sea every tribe said we will go first into the sea. Rabbi Yehuda said it was not so. Rather every tribe said we will not go first into the sea.
A Chassidic Rabbi explained that this was not a real dispute between the two Rabbis. Rabbi Meir claimed when the people from afar approached the sea each tribe acted bravely and volunteered to jump in first. However, Rabbi Yehuda claimed that when they actually came close to the sea, then every tribe backed down and refused to be the first to jump in.
This is something that happens often in real life. We have all good intentions to do something but when the time comes close we renege and back down. Good commitments are not enough. Action must follow our intentions.