So I have read some that could be distilled down to a power point presentation without losing any content, some that were pure bullshit, and some that contained cutting edge psychological and neurological content, leading to very useful tips. Cal Newport, John Gottman, Dr Wendy Suzuki, Eve Rodsky were helpful to me, among others.

I also have benefited from books on psychology, sociology and philosophy that worked for me like self help even though they weren't technically self help books. Examples Flow the psychology of optimal experience by Csikzentmihalyi and Being Wrong Adventures on the Margin of Error, and Breakfast with Seneca and Man's Search for Meaning.