What did you use to study? I used the Kaplan book the first time around and got 145Q / 154V, then I bought the magoosh subscription, studied every day for a month, then got to 154Q / 159V / 4.0 W. It really helped that the online program has a billion practice problems and lesson videos.
The GRE doesn't measure intelligence, it measures one's ability to take the GRE. I have a coworker who is an incredible therapist, but has abysmal GRE scores and has a hard time getting into grad school because of it.