Plenty of people haven't figured that out yet, but it's good to hear that you have. Jung based his system on the Western humoral system, which is like the tridosha except that it has four basic types, sanguine (air), choleric (fire), phlegmatic (water), and melancholic (earth); and yes, going to any extreme is a bad thing, and relying solely on your strengths guarantees that you will be blindsided by your weaknesses.