The path of the Buddha is to mould one´s intentions, speech and actions into that of the Buddha.
It means to let go of the intentions, speech and actions of the ordinary person, and instead generate the heartfelt motivation for speech and actions. In this way, all speech and actions are changed into the Buddha´s kind words and good deeds.
It is difficult to let go and change in this way because everybody has karma. There are worries and habits that are difficult to change.
The reason they are difficult to change is because of lack of blessing and wisdom. But with blessing and wisdom we can set aside these habits, develop the intention of Bodhichitta and let go of the old.