Just act confident. Confidence wins people over more than anything, as long as it's no arrogant over-confidence. Next time you get into a situation you are not sure what to do in, just act like nothing can go completely wrong. Also, looking someone directly in the eyes shows that you are not intimidated by the situation. However, if you feel you've been staring at someone's eyes for a long time and it's somewhat awkward, lick your lips. Studies prove it make other people sub-conciously uncomfortable, and they will look away. Just act natural.