I also have Saturn square Neptune, and it has played out very differently for me than for you.
I rarely compare myself with others. I realized quite early on that somehow I am put together in a very different way than I was told I should be, and then all these comparisons, at schools and competitions and stuff, well, it felt like people were cutting off bits and pieces of themselves and others so that they could "compare" them, it felt bizarre, cruel, even....it didn't feel like they were comparing a real person with another one, it felt more like they were comparing stuff that existed only in their own heads. I didn't see the point. But then, I've always been "strange" and sometimes even "disturbing" (five-planet stellium in Scorpio in the intercepted fourth house, involving Sun, Uranus, Mercury, Venus rx and Mars).
Lin is right to ask about how you'd describe your identity, your Saturn is at your IC, and Neptune is in the 6th, maybe it is by comparing yourself to others that you hope to learn who you are? Saturn rules your seventh house (and 8th and 9th). His only major aspects are this square with Neptune and a sextile with Uranus. His ruler is Mercury, conjunct the Moon in the second house. Also, the Sun is the final dispositor of your chart, everything is about the Sun and what he signifies. Mars in Cancer is rising, I would also be interested in that square with Pluto, if I were you (and Pluto is also in the fourth house). And so on.
I don't think that one single aspect is responsible for the specific ways anything can manifest in a person, you have to look at the whole chart to have an idea.
In my case, for example, Saturn in Virgo is conjunct my Moon in the second house, Saturn rules the 6th and the 7th, Moon rules the 12th. Saturn is square Neptune in the fifth and Moon is square Mars in the fourth and semi-square Pluto in the third. Mars is final dispositor of my chart, part and ruler of the five planet stellium. I've had dog phobia all my life, quite a bad one.