College Student and I freeze up

I really hate speaking in public. Just this semester (I'm a college student by the way) I had two very unsuccessful public speaking experiences.

I really hate it when I start to stutter, and actually forget what to say (even though I actually came prepared before the presentation) then freeze in front of everyone because of my jumbled thoughts. I hate it especially when I think that people think that I'm incompetent because I can't properly express my thoughts.

I now this is so not the truth because I know I am competent enough, I get good grades in exams and I do alright when writing essays. It really makes me mad and frustrated at myself because I can't do something that others can do at ease.

I was looking for a remedy for my situation and that's when I tumbled upon this site. I hope that I would be cured from this fear because I really think it's stopping me from reaching my full potential.