Whether you believe you can, or whether you believe you can't, you're absolutely right.
I grew up with a lot of brothers and sisters. I did all I could do to really stand out and that nurtured a lot of confidence and drive and ambition.
No one can make you feel inferior without your consent.
You gain strength, courage and confidence by every experience in which you really stop to look fear in the face. You are able to say to yourself, 'I lived through this horror. I can take the next thing that comes along.' You must do the thing you think you cannot do.