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.

You could begin to notice whenever you find yourself blaming others or justifying yourself. If you spent the rest of your life just noticing that and letting it be a way to uncover the silliness of the human condition-the tragic yet comic drama that we all continually buy into-you could develop a lot of wisdom and a lot of kindness as well as a great sense of humor.

As our kindness for ourselves grows, so does our kindness for other people.

Things are as bad and as good as they seem. There's no need to add anything extra.

Feeling irritated, restless, afraid, and hopeless is a reminder to listen more carefully.

Ordinarily we are swept away by habitual momentum. We don't interrupt our patterns even slightly. With practice, however, we learn to stay with a broken heart, with a nameless fear, with the desire for revenge. Sticking with uncertainty is how we learn to relax in the midst of chaos, how we learn to be cool when the ground beneath us suddenly disappears.

It is only when we begin to relax with ourselves that meditation becomes a transformative process. Only when we relate with ourselves without moralizing, without harshness, without deception, can we let go of harmful patterns. Without maitri (metta), renunciation of old habits becomes abusive. This is an important point.