Three Attitudes - Lecture 2 by Ven. Robina Courtin

In Tibetan Buddhism it's taught that the three principles of the path - renunciation, bodhicitta and a correct understanding of emptiness - are the basis of the our spiritual progress. What exactly are these attitudes and how can we apply them to our lives right now? Are they just some outdated Tibetan trip that no longer fit with life in the west? And why are they supposed to be the basis for entering the tantric teachings?