Do Not Disturb
Have you ever been in the middle of something important and someone disrupted you? It can totally throw your focus. It can be frustrating, and make you want to quit. Distractions have a way of taking a life of their own. They can hinder and halt your progress. Don't allow distractions to stop your current momentum. Wake up early. Stay up late. Plan accordingly. Do what ever it takes to find the time to focus on what you are trying to accomplish. Make others respect your time and space. Put up a sign that simply says, "do not disturb." You're not being rude. You're just making your time a priority.