It says "Instead, humbly think of others as being better than yourselves."
This simple passage is actually complex from my perspective. Who are the "others" it refers to? Other Christians, or all people? What about people who behave as enemies to sound morals or the Christian faith specifically? Pardon my needless over-dramatic point, but would I treat Nazi SS leadership as "better than myself?"
Ultimately, regardless of who the "others" are and their moral standard, I feel as if this passage contradicts many other passages that teach "love others as yourself." Those passages don't say "love others more than yourself" and for good reason...you can only love other people as much as you love yourself.
If Phil 2:3 had simply said "treat others as valuable/worthy as yourself," then I would have no questions at all...it would be a powerful statement (particularly if the "others" it refers to are "all people"). I would then simply take it to mean that I should be humble. But again, the passage does not speak of equality with others...it speaks of superiority of others.
I'm curious if someone can pick this apart for me. Perhaps the Greek contains subtleties not reflected in English?