Curiosity Kills

I was born with extremely high level of curiosity. Yup, most of us are. It's kinda disturbing, hard to pay fully attention on on-going task. I was doing my assigment, and without realizing it, my screen was already on wikipedia site, peoples blog, youtube la, etc. My assigment progress are damn slow. I need to be hundred times focus. I need a motivatior. Please.. someone give me a tips.