Self observation

"Self observation is essential to self growth. You must first understand the
motives for your own actions in order to understand others." - Chin Ning Chu

Fear of failure

"Don't fear failure so much that you refuse to try new things. The saddest
summary of a life contains three descriptions: could have, might have, and
should have." - Louis E. Boone

William Shakespeare

"What this power is I cannot say; all I know is that it exists and it becomes available only when a man is in that state of mind in which he knows exactly what he wants and is fully determined not to quit until he finds it." - William Shakespeare