One of the most powerful truths that I constantly use is :
“There is no such thing as reality, … only perceptions.”
This strong concept is all about mental vision and all. Your enemy is not stronger than you. He is stronger than you because you perceive so. There is no such thing as a difficult task. The task is difficult because you perceive it as such. There is so such thing as a non-conducive environment. The environment is non-conducive because you think so. There is no such thing as a scary event. It is scary because you think it is.
Rectify/Correct your perception of things, and you’ll realise your full potential.