It's not withholding information as such...with the exception of covering up the fact that I would have had laser eye surgery. I've heard that a number of people do this, but more importantly, it's a silly and irrelevant rule that, from my perspective, is designed only to eliminate people from the large pool of potential pilots - don't they laser pilots in the USAF to 20/10 as standard procedure, I believe they do? If the Armed Forces were held accountable to discrimination acts and such, this would probably be seen as entirely unacceptable and disallowed. (Why is a Hercules pilot not allowed to wear glasses, but a marines sniper in the desert is? It doesn't make any operational sense.)
There is not really any other information that I could withhold even if I wanted to. My version of "keeping my cards close to my chest" is not making any rash moves and finding the right time to try my luck and so forth - not over-extending myself. It's not really about lying...it's about trying to prove my worth to people who have a "talk to the hand" attitude. Like, when you are arguing/debating, the key is to have a range of arguments and not use them all at once - so every argument given you can counter with another, until you exhaust their supply. Whereas if you lay all your arguments/cards on the table at once, you're left with not a leg to stand on. Kinda like that

I can criticise myself in an unbiased fashion, I have no trouble doing that...it's great fun to joke about for a start

But...yeah. If I don't think I'm capable of something or a certain responsibility or such I'll make it quite known, I don't like being out of my depth. Don't really have any examples to give, but I have no problem with criticising myself. Am I waffling? Dunno...but I'm really quite a feminine person in many ways, I admit when and where I'm wrong (and ask for directions!) with no problem at all, and see everything in life as an opportunity to learn something from what has happened.