求英文自我介绍,大学水平,内容要求有对未来的展望

ladies and gentlemen,
I'm a 20-old boy,I call myself a boy just because I have a naivety mind.
I'm a man who are going to be adult,I call myself a man just because I have everything that being a man required.
Ah!At fact ,I don't know so much about myself.I always show you a happy appearance but it isn't always true to my inside.that is,I have worried too much,bothered too much,concerned too much,tired too much,sometimes I even want to give up my mind for good hope!
In my opinion,one can feel the happiness only when he just went through the hard times .Misery in the pastbrings the happiness at the present.
Maybe one's life can be divided into several periods:infancy ,childhood,the early youth,youth,the adult,the middle age and the old age.
I'm in the period of youth,which is the bridge between the early youth and the adult.I erish the early youth for it brings me a lot of happiness.I look foraward the adult for I can do what l want without the restrictions and preventions from others.
one will always grow with gaining many lessons and I suppose I'v got a lot of precious experiences.
thank you !