contemplating the meaning of calling

The Christian idea of being called to something is an important one and I'm still working through it.
For me, there are two issues, a) does God call people to things and b) in what way should a person choose to speak about what God has called them to. The first question is the easier question, I do believe that in a variety of ways, God calls people. The second question is more difficult for me. Is it appropriate for people to go around saying that God has called them to this or that.
There is also an aspect in there somewhere of occupational calling. They say that this was a Calvanist idea whereby people would be destined to one particular line of work and God would call them in to it. I'm not sure about that; I mean, ya, it probably happens sometimes, but what about people who just aren't called in to any particular line of work. Don't such people get left out? Maybe fairness was never supposed to be the main focus of this...
But that brings me back to talking about calling. Should a person be like Gideon and be skeptical of that which God has called them to do? We live in an era that values skepticism a lot. Or on the slightest suspicion that God is guiding you to do something, should you immediately go and tell everyone this? I guess that I tend to be a bit more like Gideon because I've heard a lot of people say a lot of things that a person should be skeptical of. I mean, apart from whatever vocabulary you choose to use to express your own faith, I wouldn't be surprised if there are a few people out there somewhere who would say that they are called to something for imperfect reasons. Often social pressures can be overwhelming and we can't all relentlessly express the exact truth as we understand it in all situations like Mr. Marsault in Albert Camus' L'Etranger.
I think that "Calling" or "Called" must be some sort of very powerful word that we should be careful how we make use of. It would be true to say that the thing in front of my couch is a table and someday it might be true to call that thing something other than a table but only under a few circumstances. I might call it garbage if it became no longer good and it was thrown out. I might cut it up and put it back together and call it some sort of ramp. I might chop it to pieces and call it fire wood. maybe without physically changing, in some other situation, it could be called a bench or a workspace. But if I went around saying that it was called a pumpkin, I would be confused and I would be confusing other people who may be trying to figure out what it is themselves. How much stranger would it be if God called it a table and I tried to argue that it was somethings else.
I think that when people talk about calling, they are talking about what they are called in there current form and situation. I think that to get that sort of thing wrong or to wave it as a flag to show our own greatness just increases the confusion for those who are trying to figure out what things are called; to learn the language so to speak.
If Christians are all parts of Christs body, maybe we need to find knew ways to see what we are called. I'm often uncertain of what I'm called and it seems better to say nothing at all.