How do you do it?

How do you do it? I've been stuttering for as long as I can remember and my speech and feeling towards it is hitting rock bottom. I do not enjoy life anymore. I often wake up thinking "great, another day, another set of embarrassments". When I talk I feel anxious, stupid, weak, and degraded. I cannot form a proper coherent sentence. Things come out wrong and it makes me look like a bloody idiot. So my questions are: How does one become used to embarrassment? Besides the embarrassment factor of stuttering, how do you deal with the constant frustration of speaking?