I could not able to speak out loudly in front of peoples and even I am hesitating to get higher position as a senior engg. to stay back as Jr. engg. because I have to give presentation, speak,etc. I always felt that I am not at all satisfied with my job, I have changed my profession 3 times & 6 job in 6 years, I am procrastinating too much, ...etc. How do I overcome from this situation?