Are you ok?

I was asked by one of my professors recently 'Are you ok?'. I of course answered the standardized 'Yes'. I left his office a short time later and considered this what does actually mean to be 'OK'? Does it mean to have money is it a certain state of being; could it be that just being happy is this being 'OK'? I continued and wondered on if being ok is what we want. Then wouldn't everyone have to know what 'OK' in that case means? The challenge at this point of course would be the question of standards what is that elusive 'OK' standard? Could it simply be that it is a state of peace a state in which we do not question ourselves as strongly? The challenge most young adults face these days is the question 'What do I want to do?' We have all seen the news articles saying that todays youth has it hard because everything has already been done and discovered; but is that really true? I mean ultimately we face new set of challenges today we still have ignorance and prejudice doing damage everywhere we look. Today's challenges are the challenges of a modern age. We can still fight for freedom; just now we fight for freedom of information and thought. We can fight to protect the environment which seems to be tethering near the brink of collapse. We can discover ways to life in symbiosis and learn to understand the rest of the planet. We still know less about the sea life the we do about the nearest solar-bodies. But in all of this information flooding at us what does it mean to be 'OK'? In the modern world we are told that we should do this and that is that what allows to be 'OK'? Is being OK being in a good financial standing? Is it happiness? Is it being content? Is it a positive mixture of everything?
For me personally I would say that being 'OK' stands for being anywhere from content to happy. However instead of answering such questions in a state of trance why not consider what it means? Maybe think 'Am I really OK?' 'Are you OK?' is not a simple question as it seems but rather a very meaningful question which common use and conversation does not receive any or only little consideration.