The essence of practice is really in mind itself, it is accumulating virtue in the mind. When we hold to the commitment that we have made to liberate beings, we continuously act on their behalf. We don't act in order to benefit just ourselves in anyway. Not even with the smallest pore of our skin, do we wish to bring benefit to ourselves alone. In fact, we take the vast mind that says - even if I need to take rebirth in the three lower realms, that is fine. Everything I do is for the benefit of others. When we have this kind of mindset, then all of our activities of body, speech and mind becomes virtuous. We should recall again and again the qualities of generating bodhicitta, that it establishes us on the path, that it becomes a cause for us to purify negativities and accumulate virtue, and we should rejoice accordingly.

-- Garchen Rinpoche