If we do offering food for others below are some point of motivations which could be useful:
THE FOOD OFFERING PRACTICE MOTIVATION
“The purpose of my life is to free all living beings from all suffering and its cause and lead them to full enlightenment.
“There are numberless hell beings from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless hungry ghosts from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless animals from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless human beings from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless sura beings from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless asura beings from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“There are numberless intermediate state beings from whom I receive all my past, present and future happiness, all realizations and enlightenment. They are the kindest, most precious beings in my life. Therefore, I must liberate them from all suffering and its cause and lead them to enlightenment by myself, alone.
“In order to do all this, I must first achieve full enlightenment myself. Therefore, I am going to practice the yoga of eating and make charity to all sentient beings, including those who live in my body, and, through the connection with all sentient beings I have created by making food charity to them at this time, bring them to full enlightenment by teaching them Dharma when they become human.”