The art of working with this is to use the dynamic to its best and try to curb the excesses of the worst. I made that sound so easy. I know it's not.
Neptune is imagination, fluidity, and perception as well as illusion and confusion.
Simple example, Mercury Square Neptune. How many times have you logged into LL and seen that written off as 'liar'? Astrology and people are not so simple. It's an aspect crops up on the chart of poets and writers, people who have found ways to channel the dynamic creatively.