This is the Dharma talk offered by Thay in the first talk of the Together We Are One Retreat at Deer Park Monastery on the North American Tour, given on Wednesday, September 7th, 2011. Thay shares with us the about the practice of mindfulness of breathing. "It is always true that mindfulness and concentration bring insight; and insight is something that can liberate us." "We do not practice like a machine: we are alive. We are not caught in the form of the practice. That is why every moment we experience nourishment and healing." He goes on to talk about the four practices of right diligence: 1) recognize the negative seeds and make sure they don't come up, 2) if a negative seed has already come up, embrace the formation and invite it to go back down, 3) invite good seeds to come up, 4) maintain the good mental formations for a long time. He also discusses in detail how we can embrace our difficult mental formations just like a mother embraces her crying baby.