I am mortgage side, not a Realtor, but the game is the same. My largest competition is all of the online players as sometimes impossible to always meet or beat pricing. make yourself local, make yourself the knowledge source, spend every day showing your value. 

It's all about differentiation. Stand out! You have to carve your own niche.  Walk your own walk, talk your own talk, stay independent, be willing to adapt, and always stay open.  24/7 is a lifestyle I chose but does not work for everyone, it works for what I do.  

Every one must internalize what works best for them then carve that niche