What is very, very cool about Seligman's work is that the strengths are yours--you find which of the 24 (humor, appreciation of excellence and beauty, etc.) and you focus on using those strengths to improve your happiness. This isn't a Renaissance Man approach: the idea isn't to attain each strength. The idea is to find who you are and to use that to improve your life--and to find out your patterns of thinking and approaching a situation.
That's why it's called Authentic Happiness....it's your brand of happiness, and the way you reach it would be by using a different array of strengths than I do. This is good, good stuff.