Being too daft to be miserable, I exude a cheery happiness naturally, and I can see this somewhat confuses many of the JW's I have spoken too since leaving.
A couple of them have actually asked me outright if I am really "O.K", one M.S even said " But.... you can't be happy !"
I told him I definately was, the only small blight on my happiness was a resentment I feel at the years I wasted in the religion. He hasn't spoken to me since, such talk is a "spiritual danger" to him, he wants to be an Elder.
All of this shows how deep the mind control goes, they simply cannot conceive of anyone being truly happy in "this System", because all JW's feel an underlying unhappiness at present, which they put down to not yet being in paradise, whereas really it is being in the religion that gives them unease and unhappiness.
Mr and Mrs Phizzy and offspring being as happy as we are is actually a challenge to their whole belief system.
I agree with dear Tal above, make sure you actually are not as a person Negative, Unhappy or Bitter.
I do agree with the concept though of not revealing to JW's any little "negatives" there may be about our present life, we all must have some, but no need to mention them.