In order to accomplish
something, you must focus:
1-Sufficient
attention.
2-Sufficient
energy.
You may sometimes find that
you can’t focus your attention because you have things in your mind.
In this case, you are
unconsciously defocusing :
1-A percentage
of your attention and
2-Energy
away from the target.
The problem is, after we’ve
selected our target we divert varying levels of our attention and energy away
from it and this usually prevent us from hitting it.