Are you submissive ? Do you fail to make and maintain gaze with them while you have a conversation with them ?

Do you you feel every time you encounter them, they are having an upper hand over you and encroaching on you ?

If your answer to above questions is 'yes', then think about it and I may suggest you some help.

I may ask you to stop worrying about them. Why do you let your peace being taken by somebody else. Just take them out of your mind.

The next time you meet them, stare into their eyes; And as they bully you, don't take your eyes off, wait for a moment and say something short and sharp; like "what ?" or "shut" or whatever that suits the context.

You may want to change your attitude towards them; Be bold and optimistic; Whenever you meet them, have your shoulders upright, neck extended, eyes sharp, arms in the front, forearm free and fingers unfolded.

And for the long term, hone your skills in the game as well as in fields you like. Try to prove them that you outmatch them in certain areas and stay above them.

If your answer to my first few questions is 'yes', then,

You may be a little unsocial. And come on you can change it.

Invite them for a drink, take them to a movie and before that, talk some extended junk in areas they are interested; This may help them to wear off their inferior feeling.