Okay so back to the thread's point: so what makes you think 4w3, si? For me, I relate much to this creation of the ideal self and needing external validation of it being ideal. I really looked up to my 5w4 and 6w5 dad so I think I tried hard to be like them. I feel like with the 4w3 you are constantly between two forces of bring true to myself and what do people think, am I getting the sort of reaction I want to be getting. I suppose it depends on the instinctual stacking, what kind of success you want, for me it's been be a wonderful, genre breaking writer, filmmaker and be very attractive, interesting, desirable to those I want to attract. Unfortunately my attention often goes more toward the latter pursuit. My fear of failure often paralyzes me: I don't want to do something unless I can be great at it.
I think people get this idea in their head that w3 means you aren't interested in intellectual pursuits, learning. I think that is a major fallacy which makes lots of infps think they're 4w5s.
I hardly see you other than 4w5, especially after reading your writing. w5 because you seem austere, reflective and thrifty of your energy, not genteel and diva like 4w3.
You express this very well. Actually, we are lot in writing descriptions on this site, and it's fine, but we should'nt forget that Enneagram is at first a narrativce and oral tradition. And it's what is recreated in Enneagram workshops: people of a specific type are gathered in the same round and start to speak about themselves. 
