Turn Off the Internet
Turn off your email.
Source: Anthony Iannarino, sales author
Turn off your smart phone.
Tell your friends you have a newfound discipline and that you need their support; promise to catch up with them later. Hang a sign on your door saying "Do not disturb! Prospecting!" If you don't have a door, use a string and hang the sign over your desk. The more seriously you take yourself and your work, the more seriously others will take you.
If you have a lazy attitude toward prospecting, it will fall to the wayside. you'll let other things take priority while your competitors start surpassing you. It happens all the time.