How to Cut Down the Time Required to Master a Subject

The man in the army should not allow noise or other distractions to put him off his work. If it's convenient, a definite time of the day should be assigned for studying. It is possible to make yourself deaf and blind to all sorts of sights and sounds except those directly concerned with the problem being studied. The mind is an excellent sieve net. Do you get annoyed when you are trying to do work? Do you listen to music when you are doing work? Depends on the work, but yes I am not listening while I'm working. You know what I was just like, I was just asking... At first, shut out distractions. And if I let something bother me then