I'm about 6'3 so I don't have that problem, but I know multiple short dudes who do well. And I know short guys who fail in large part due to their personality. With women there's that "cool fat chick with a cute face" stereotype personality, and with dudes there is definitely a "cocky/funny short dude who everybody likes" stereotype personality. If it's not natural you gotta work on that shit for years, honing your craft.