James 3:13 Who is a wise man and endued with knowledge among you? let him shew out of a good conversation his works with meekness of wisdom. 14 But if ye have bitter envying and strife in your hearts, glory not, and lie not against the truth.
How do you view yourself? How do you want others to view you? If you desire to show yourself to be a wise person then you or have a reputation for being wise then you should do the following things.
Your behavior will telegraph to all if you are wise or not! Live right. Live a life that shows your wisdom. Be humble. People will know how wise you are not by what you say but by what you live, what you do! If you have a mean spirit and ambition and desires with a mean spirit then you are showing that you are not wise.
The truth will come out in the way you carry yourself. If you have knowledge and wisdom then it will show in how you live.
You are only deceiving yourself if you think you are wise but your actions show you to be mean spirited, egotistical, boastful, etc.