Jyoti, 

Learning any language can be frustrating, and English can be particularly difficult for other language groups due to our pronunciation, spelling, collocations, idioms etc.

My advice would be twofold:

1) Practice common phrases you can use in many situations to give you confidence that you are understood

2) Use filler phrases that will slow the conversation and give your brain time to catch up. For example, if you are asked a question you could say, "Let me think about that... I think/agree/disagree... and..."

These techniques might not be suitable long term, but for now they might help your confidence. Ihope that helps, Andi

i meet the same problem, however Andi is right, by the way practice more, let the native english speaker modifies you.

i have corrected this problem a bit now only problem i am bit hurry while speaking english.

can we connect at skype for practice english speaking..my id is chaudhari12366.

Thanks Andi and tomyan