Fascinating, truly those enneagrams.
The quest for purpose remains. Do you find you are very smart and quick to get your head around relativily difficult chalenges? (Yes yes I know it's a forum for Smart people. Note the Very)
Funny isn't it that by being so talented you're actually getting bored because you get the hang of it quicker then others do. My brother's the same and at 40 he still wonders what he really wants to do...
To be honest I've never had that problem as I knew when I was very little what I wanted to do in life. Saying that, everyone has moments they 'wonder what it's all about'.
Have you tried meditation? It helps me find answers. All the best to you.