Is my life going to be ruined because of the way I am?

I'm 16 and going to be going to be starting a sixth form college soon. All my life I've had my heart set on being an animator. But because of my VERY low self esteem I just thought... Why try? I'm never going to achieve anything close to this. I've been told that I'll get crappy grades even if I try my absolute best I'll get a D at the highest. Not just that I'd have to meet and talk to people who'd probably hate me anyway. Is there any career that doesn't include crowds of people?

Maybe you should start positive thinking and daily positive assertations. That way it will gradually seep into your subconscious mind. I'm 22 now and started to practice this way of thinking, though I wished I'd start earlier.