In tonglen practice, when we see or feel suffering, we  breathe in with the notion of completely feeling it, accepting it, and owning it. Then we breathe out, radiating compassion, lovingkindness, freshness - anything that encourages relaxation and openness.  So you're training in softening, rather than tightening, your heart. In this practice, it's not uncommon to find yourself blocked, because you come face to face with your own fear, resistance, or whatever your personal "stuckness" happens to be at that moment.

All situations teach you, and often it's the tough ones that teach you best.

One very powerful and effective way to work with this tendency to push away pain and hold on to pleasure is the practice of tonglen.  In tonglen practice, when we see or feel suffering, we  breathe in with the notion of completely feeling it, accepting it, and owning it.

To be fully alive, fully human, and completely awake is to be continually thrown out of the nest. To live fully is to be always in no-man's-land, to experience each moment as completely new and fresh. To live is to be willing to die over and over again.

Compassion starts with making friends with ourselves.

Well, it starts with being willing to feel what we are going through. It starts with being willing to have a compassionate relationship with the parts of ourselves that we feel are not worthy of existing on the planet. If we are willing through meditation to be mindful not only of what feels comfortable, but also of what pain feels like, if we even aspire to stay awake and open to what we're feeling, to recognize and acknowledge it as best we can in each moment, then something begins to change.

Although we have the potential to experience the freedom of a butterfly, we mysteriously prefer the small and fearful cocoon of ego.