need help!

hey everyone..

okay, so my question is..how do i get my hair straight and non-frizzy? i take a shower at night so while i sleep i put it in ponytail and try to keep it wet so i can blow dry it in the morning. but then after i do that its not straight and its all frizzy, and when i straighten it, it doesnt stay straight? so what would your suggestions be?

sorry it was so long everyone, i know usually these messages are short, but if you could back to me soon that would be great ! :)