That works out in different ways for all of us. But it is the same Christ who is behind it all. Jesus' goal wasn't to set up a zillion different churches, each one of them convinced that they're right, and that everyone else is wrong or going to hell. That is a perversion of the good news. Jesus' goal was for us to grow up, to grow into maturity, into the fullness and richness of what God has created each individually gifted person to be.
Ordinary people can live that way.
Paul isn't talking about some kind of superhuman spiritual gymnastics here. This isn't the Olympics. These are things which ordinary people can learn and understand and live by. One of the biggest reasons that we don't reach out, that we don't live our calling to be everyday missionaries and servants, is that we water down our lives and our expectations. If we can't be great, if we can't be spiritual athletes and spiritual giants, we figure we can do less than what we're really called to do.