Start by realizing that one can never "MAKE" another person happy. That's enmeshed, co-dependent thinking.
When you learn to view each other as the FROSTING on your own cake of life, full of your own passions, beliefs and interests . . . you will both be on a healthier emotional path. It took me a LONG time to learn this, and in some ways I'm STILL learning it, 8 years post-bomb and 7 years post-reconciliation.