after reading this, I think I am more thankful for a professor who (in the most polite matter possible) told me that she would not write me a recommendation because she did not believe I would excel in a graduate program.
I was crushed, I had her for 3 courses, earned As and high marks on my work, excluding one exam, which is what she cited as her reason! At the time I had been taking 7 courses a semester, which is what I did for a large part of my academic career, actually...
Anyway, I cried alot and decided to put off my application until I had established more varied and personal relationships with other academics...which thankfully I did...and even managed to get a mentor to help me out in all of this in the process!!
But I am glad that she did not agree and write a terrible letter...that would have been much worse!