Nervous Habits

I have some pretty bad nervous habbits, these are some of them.

1. Mumbling: I have always mumbled, talked too quietly ect.
2. Stuttering: I don't think I used to stutter half as much as I do now after becoming friends with Grant. It's not just stuttering on one syllable, I might say something like: "Well I ... um.. I, I, I did, well you know, I don't know, some, you know, some stuff and - stuff.
3. Saying the word stuff: It means almost anything but often fills in a word that I'm too ebarrased to say but often just ends a phrase when I'm feeling awkward or something and stuff.
4. Scratching my temple.
5. Slouching.
6. Acting cold or indifferent: This is the worst of all my bad habits because people just think I'm cold. When I meet people or whatever, I want to act nicely but I feel to nervous to and I often come off as rude. I really have no idea why, I really would like to get to know you.