Im assuming you're being serious here... Do you meditate? If not, I'd advise you to do so, it will help. Look up "mindfulness", it's meditation without the bullshit. The voices are just thoughts in your head. If you practice mindfulness, you'll be able to refocus your attention to the task at hand, and the voices won't be so much of a problem. Again, the voices are just thought in your brain, acknowledge them, but let them go and refocus on your whatever you're doing when you practice mindfulness.