Dup - as you said, you have learned.
In close-up situations I am much more inhibited and reserved. So yeah, I guess that does attract hecklers.
They smell your fear...
"Hecklers" are often just people who want to be involved. You can be combative, or involve them.
One option, after the first "insertion" into the middle, (if you really could not get to it...), I would have just checked that he REALLY remembered the card, told him we'll come back to that at the end, and moved on - usually with a good self-worker from Dai Vernon that I use at every gig.
My worst ever heckler (a young engineer as it happens...) got really embarassed when I just asked him (nicely)
"Would you mind if I just completed entertaining the rest of the table before we carry on with this mental duelling contest?", (or maybe I headbutted him, I cannot remember...).
A lot of the time it's down to being a socially confident person first, and then a magician. So many people seem to take up this hobby because they think magic will help them socially and help their confidence. WRONG...
As far as social skills and confidence goes, magic will only help prepare them to:
1> Entertain the public using these skills, and they STILL have to learn the social confidence/awareness side of the business, OR
2> Prepare them for entertaining other magicians at clubs and "down the pub", where they will just be socially
secure, not developing
new skills, and failing to evolve socially.
In close-up you do not have the stage and the orchestra pit as a barrier.
There's another thread here on the "Support" forum
http://talkmagic.co.uk/ftopic38692.php about learning to perform close-up. As I said there, one of the best (IMHO) ways to practice these skills is to go to lessons where you learn to (ballroom?) dance, with strangers. If you can learn how to walk across a room to someone you do not know, and then say, "
Do you mind if I put my arm around you, and talk to you for 3 minutes in an entertaining way WHILST ALSO doing something quite technical?", then you will have conquered most of the skills you need, and being a close-up magician will seem like a breeze after that
Good luck, and remember... people, people, people, people, yourself, sleights and routines, in that order of importance.
Bruce