Laughter is a big one. If you have a nervous tick, such as laughter, don't be fooled... people WILL notice it. Excessive laughing, smiling, coughing, etc. is a dead giveaway that you don't trust yourself in your decision making capacity.
Do you raise your voice to a higher than usual note? If so, it sends a signal to others that your title might say "Executive" but you're not self-assured. Try to maintain an even tone at all times.
You are buddies with your employees. Why? I never understood this tactic. Someone has to be in charge, why not you? If you're busy trying to be liked then you're not being the boss. Change this!
If you're in a position of authority, you need to act as if you are in charge.
Until next time,