No deception
Not deceiving oneself is one of life’s greatest accomplishments men can attain.
This is because you are able to deceive others and not get hurt much by doing so, but you are unable to deceive yourself and expect not to be hurt by it, that is mostly impossible.
When you are sincere with yourself about where you are, what you know, what you don't know, then you are able to find answers as to where to be and what to be or even what to do and accomplish.
I hope that was helpful.