Tour will is like a muscle.
You must first exercise it and then push before it gets stronger.
This necessarily involves short term pain but be assured that the
improvements will come and will touch your character in a most positive way.
When you are hungry, wait another hour before your meal.
When you are labouring over a difficult task and your mind is prompting you
to pick up the latest magazine for a break or to get up and go talk to a friend,
curb the impulse.
Soon you will be able to sit for hours in a precisely concentrated state.
Sir Issac Newton, one of the greatest classical physicist the world has produce, Once said; “
If i have done the public any service, it is due to patient thought.”
Newton had a remarkable ability to sit quietly and think without interruption for very long periods of time.
If he can develop this so can you !