to a person i've let down too much,my Mom

To Mom,
I'm sorry with the fact that i've let you down so many times since I was born.I know you're dissappointed with me.I am not a good daughter to our family.And now I just think that my born was a mistake from the very beginning.To be made in a family with a high academic perfomance,Ive done my best.But still it isn't enough.For me,for you and dad and of course for the sake of our family.It is a shame how stupid I am.Undoubted,not even once.My perdomance...I can say it is almost hopeless.You were there everytime I fail and to day it just too weird for me to be in this alone.Battle of the Feeling.