What do you suggest if i am 5'9 1/2 ft (176cm) tall i feel short and inferior.?

Talk to someone: You're actually taller than average for a man in most communities. You need to get over this kind of thinking -- it accomplishes nothing and will just make you miserable. If you really have body dysmorphic disorder (i.e., this is obsessive), talk with your physician. Paul Newman & Mel Gibson shared your height but they developed themselves. You can do the same & stop troubling yourself.