The average person puts only 25% of his energy into his work.
The world takes off its hat to those who put in more than 50% of their capacity,
and stands on its head for those few and far between souls who devote 100%.
-- Andrew Carnegie (1835 - 1919)
Most of us like to learn and master something or some subjects.
Nevertheless, many do not take the pain to put in 25% of our efforts and we are puzzled or disappointed when we cannot understand the thing or subject as easy as those who do so.
If you are committed to the subject and devoted 50%, 75% or even 100% of your energy into the work, you will definitely stand out among your peers!