I can't communicate properly in group because i have fear how everyone will react and think? i tried lot but cannot overcome this.

Try this: First, get with your personal physician for help finding a short-term therapist who discover internal barriers to success -- specific or general social phobia, replaying old bad memories. Second, a big part of success talking with people involves figuring out the group's norms, what they want to hear, being a diplomat & couching your messages in acceptable terms. "dale carnegie"'sstill helpful.

Social phobia?: It sounds as if your own efforts are not working so far? Your description could be a type of social phobia, for which there are good treatments with talk therapy. Psychologists, other therapists, and some psychiatrists provide this kind of help. Assessment is needed first, to be sure of what's going on. Sometimes things are more complicated, and this needs to be considered in working with you.