Well I'll have to disagree with you Angelica.
What really is a spell? The physical words or the intent and emotion behind it?
As long as the intent, emotion, and in some cases luck, is there, then any spell has the potential to work. When you already believe that a spell won't work it's almost impossible to get it to work for you.
I pose to you this hypothetical question.
If you believe in yourself, your abilities, and magic, then what is beyond your reach?