A set of 8 audio recorded sessions on Happiness  by Traleg Kyabgon  Rinpoche IX. 

If we understand suffering better then we will have a better chance of understanding what happiness is. If we don’t bother about what makes us suffer or how we suffer, or the nature of suffering, or where that suffering is coming from, all of these things, then we will be not so well-equipped to produce happiness. Whether we actually experience happiness or not really comes from how we cope with suffering and how we deal with suffering and so on. So they are not unrelated, in other words, the notion of suffering and the notion of happiness,at least from a Buddhist perspective, are not unrelated, but as a matter of fact are intimately related.