There's looking attractive, and then there's BEING attractive. 

These are two very different things. Besides your personal hygiene and the wardrobe you wear, there's nothing you can do about your looks. Nature and your parents have decided if you’re stuck being short, bald, or whatever. That's not going to change anytime soon. 

 But you DO have 100% control over how you act. You have complete control over what you do, what you say, and how you perform in front of others!