Last book of 2023. Listened to this on audio book. It could have been a little more concise. Not necessarily any new information but reinforced previous ideas. I really liked the empirical evidence to support different ideas and also his own personal experiences. This made it more alive. As someone who is pretty happy in life it reinforced things I should continue doing, eg have balance in life, sleep well, eat well and do some exercise. Have attachments with people I trust, have faith in something, spend time in nature etc. A good book.