Side note: I just read an interesting article on addictive behavior. It suggests that absolute addiction is not really as hard to overcome as we previously thought. The problem with addiction is it's a way to bond with something. Bonding is the actual addiction. You can bond with people, drugs, things, behaviors. If you want to overcome a particular addictive pattern of behavior, you bond with something else and you will overcome it.
Back to your problem. I think we all develop addictive patterns of behavior. One of those patterns is absorbing new possibilities. Learning what's possible. But never acting on it. It's a side effect of having access to all this information. I suggest you bond with one particular idea. Do this by bonding with the people who are already bonded with the idea. Focus on one thing. I don't think it actually matters what it is as long as it's in line with your learning/career goals. Locate blogs and other people on campus with a strong bond to the idea you are trying to master. Embed yourself in with these people. Get to know them. Believe in what they preach. Absorb the information until you reach a level of mastery that appeals to you. Then leave and do it again with a new idea. You have to become a true follower and believer of the particular scripture you are chasing down. Once you do that, your mind will open up and allow you to absorb as much knowledge as you have time for.