I have been wondering about this. I experience myself as a very strong and determine person and others in real life often see me that way; I am probably not an INFj however.
From observation, I personally think the association of with strong will and determination is over-rated.
Will the INFjs (and perhaps those who know them) say how a lack of manifest in their lives?
Do others who know you in real life think of you as a weak, fragile pushover? Are you really the doormats of the socion, well I made that part up but...
I am a bit frustrated with the way I think socionics presents INFjs as super sweet and lovely but people who are enormously weak willed to the point of not even being able to say no (I read this in one description). In another, it is implied that INFjs are so lacking in determination that they cannot even live up to their own ideals a lot of times.
INFjs, how do you see yourselves? Are these descriptions a fair and adequate description of who you really are?