I started my training right after high school and got my pritvate before I was 19. I finished my training when I was 20 and started working soon after. I am not military so flew R-22 and 300. It is about your attiude and professtionalizm. People will look at your age that is what people so you will have to handle yourself in oder for them to take you serious. I am 39 dual rated ATP almost 10,000 hours you will blink and see how fast the time goes by. Keep your head down set goals and charge on. Don't let people hold you back from your goals because this business breeds alot of that.
best of luck