Why We Fail or Succeed
If we are able to effortlessly excel in a given activity, it is because we have developed the ability to focus and concentrate our Prana (life energy) into the accomplishment of that particular activity (through our efforts in this birth or previous births).
If we are unable to excel in a particular activity despite our repeated efforts, it is again because the required amount of life energy is not reaching the target objective.
In other words, we may be in a state where: we are yet to cultivate and master the art of focusing Prana to the required extent regarding the particular objective at hand,
or
there is a deficiency of the required amount of Prana.
If both these conditions don't apply, there is something hindering the free flow of life energy into the target, resulting in our inability to succeed.
Man's success or failure regarding the attainment of an objective depends largely on this simple and basic principle.