Always remember that the act of carrying a firearm is taking on a very serious responsibility. By default you are taking on the responsibility to defend not only yourself, but all those unarmed citizens around you. Take not this responsibility lightly. If you wish to carry to look "tough" or just to feel like you "have something over everyone else", I admonish you, (and everyone else here for that matter) to PLEASE NOT carry. Ponder your motives for carrying, are they for self protection in an unsafe world, or are any other motive at play? Are you willing to behave in a manner that draws respect, or are you planning on behaving, as a large number of your contemporaries do, with arrogance and (excuse my wording here) ignorance? No matter what you may think, you are NOT invincible, and at your age, still have much to learn about life and social behavior. I am sure that you have been raised well and have [pure?] motives, I am just pointing out that with the right to bear arms comes great responsibility. I also agree with earlier comments that if you have in any way an infinity to use anger, and are not in control of your emotions in ALL settings, carrying may not be advisable. A sidearm is NOT a toy!
With all this said, I welcome you to the world of open carry, and wish to say that you are not too young if you are mentally prepared, and have great respect for the ramifications openly carrying holds. I am 50 years old and have, on and off, carried openly since I was 18 in Arizona. Good luck and PLEASE be safe and carry yourself well in the public eye.