"i am very very sceptical , once had stage hypno , out of around 10 people i was the only one who did not get hypnotised."
Ah yes. I recall, whilst on holiday once, a hypnotist asking the whole audience to try something, I think to sort out those most likely to be easily hypnotised. Didn't work on me either. But that is a different scenario. You aren't in a private area with someone trusted, but on public display with someone you think is going to have fun with you.
Recall that no one actually hypnotises you, they make the suggestions and you opt to go into a hypnotised state yourself. You need to trust the hypnotist and be relaxed to get there. And be aware it is still your mind in control even if once you opt to go into a hypnotised state you are more susceptible to suggestions. Which is, of course, the whole point.