I enjoyed this: https://youtu.be/CH2ys_IgV4Y
One point I had never considered is that happiness and enthusiasm have every bit as much survival value as fear and aggression. They create work. They create effort. They facilitate exploration and learning and emotional and technical growth. If you love to do something, you get good at it. And happiness also is closely tied with creativity.
The second point I would make is that free markets and property rights and enforceable contract law have evolved in the direction of happiness. Being a happy organization is literally a competitive advantage. As he puts it, happiness leads to creativity leads to innovation leads to success.
How opposite Socialism is in this, in denigrating work, denigrating challenge, and disempowering everyone.