when my best is not enough

In striving to better myself,
I work my hardest towards my goal.
When obtained I often fail to be satisfied.
Was my goal not high enough,
Or am I simply always discontent?

When I fall short of reaching my aim,
I turn towards myself to yell accusations.
Was lack of success really because of me,
Or perhaps uncontrollable circumstance,
Had something to do with my imperfection?

How will I ever know?
Unable to go back and try harder,
To fix what I thought was wrong,
I’m left looking in the past,
Contemplating what ifs.