Real DJs are always prepared. Remember Murphy's law. You must be prepared to improvise when the time comes for it. Bring extra wires, extension longer than you think you need, flash drives, etc..

Every track is someone's five star track. Instead, use the star system to categorize them or rate by energy

Real DJs understand music is about feeling. Technical skills are tools to achieve this. Skills are tools, not the goal.

Dont be afraid of your own success!