Just accept the way you are and don't try to kid yourself you can change that.
As in the post above
"Ultimately, if you're standing around taller people, you're going to look sort of short. This is as true if you're 5'6" and standing around six footers, as it is if you're 6' tall and standing around NBA players. Seriously, there are NBA coaches who are 6' tall, and when their players are clustered around them, they look puny"