One day boycott does nothing, you will buy more before or after said day. So, thats pretty much useless.
You have to change your HABITS, make a list and knock out several errands in a logical path, take public transportation, carpool, drive a different car, leave for work early so you dont sit in traffic, turn off lights, turn up a/c settings so its warmer (or heat down so its cooler), etc
Oh, and shoot your commodities traders. They are the ones driving up price. Speculation is why the price is going nuts. Also, tell your dolt congressmen/senators to get their act together. Allow domestic drilling! Imagine the cost savings then. Get irritated with your gov't about the insane gas tax.
Most are not ready to drop fuel from their life...its a need, unlike bananas for example. We dont need bananas, so if we boycotted bananas, price would drop. Nobody wants to change their fuel consumption habits, so no reason to drop prices. Sure it costs more, but it seems as if most are able to absorb the blow (even if no fun) to the wallet.