This book is the summary of a conversation between a large group of people over five days. As such, it meanders a bit. I think because Goleman is a collaborator with many of the people involved in the discussion, he feels like he has to present them in a good light, introduce them in detail etc. This book could have done with a few less "and then Alan, with his expertise in blah-blah chimed in usefully".
In fact, they come back to the same subject a few times, and appear to contradict each other. I think the book might have been better grouped thematically. They keep coming back to: (1) positive emotions as a protection against negative emotions, (2) can "destructive emotions" be appropriate or adaptive in some situations, (3) brain plasticity, (4) individual/cultural differences vs universality.
There will be diamonds in the rough for most people, as these people are experts, so you might learn a bit about Buddhism, neuroscience or psychology. If like me, you've read a bit of all three, there is not so much that is earth shattering.
The Mind and Body series, where the Dalai Lama meets scientists from the "West" is a good idea, and this is the one that interested me the most. This one was quite an academic way to come at negative emotions, and I wonder if a group of social scientists, social workers etc. discussing it in the same context would give a different angle.