I use to talk fast and also clear when I was young, when I went to college that's there when my speech started to break, since then I am not able to problem words starting with t, k,p and few others. But some times I can pronounce them clearly but some times at the same situation I get stammer. Like tttttoday. I was slim, but from the age of 17 I started gaining weight. When I get angry or when I have to talk to somebody new or at the interview. My hands get cold and my legs start to shake. And again this doesn't happen all the time. I don't know what is the problem. But stammering is the problem. Which is like a snake in my career and life progress. Pls help me on this.