You think your height is making you small, though in reality your beliefs about your height are making you small.
Think about this. Isn't there a time in your life you did not feel short? Like it didn't matter, you just felt normal? If so, which is very probable, you know this 'place' exists.
Try questioning your beliefs about your height with The Work by Byron Katie (
http://www.thework.com); she wrote a book called Loving What Is.
The point of the matter is that it is a socially conditioned belief that is limiting you right now. In the long run you have to transcend social conditioning and find your unique purpose in this world. Get in the world, not of the world. When I feel most free, most unlimited I feel like I am on some sort of cool, heroic mission on this earth and then nothing matters about myself, ít's just me here carrying out a purpose; not about trying to 'fit in'.
If this concept is new to you get yourself some spiritual books (The Power of Now, A New Earth, Awareness) and watch The Blueprint by Tyler Durden/Owen Cook (realsocialdynamics.com).