Why is bodhichitta necessary for success in meditation? Because of selfish grasping. If you have a good meditation but don't have bodhichitta, you will grasp at any little experience of bliss: 'Me, me; I want more, I want more.' Then the good experience disappears completely. Grasping is the greatest distraction to experiencing single-pointed intensive awareness in meditation. And with it, we are always dedicated to our own happiness: 'Me, me; I'm miserable, I want to be happy. Therefore, I'll meditate.' It doesn't work that way. For some reason good meditation and its results – peacefulness, satisfaction and bliss – just don't come.
Lama Thubten Yeshe gave this teaching during a five-day meditation course he conducted at Dromana, near Melbourne, Australia, in March, 1975