Whenever I sit down in front of my computer I make sure my blinders are on. If I don't, I will be swaying all over the place browsing here and browsing there and before you know it you are in places you should not be. Places like where Irma is in today's Compu-toon. This behavior mimics how life is. If you are not sure where you are going and you do not have any goals or directions, you will start dabbing into a lot of things and end up in the wrong place.
The key point to all this is to make sure your blinders fit well. You don't want any temptation leaking in.