Jesus has a different view of maturity: It is the ability and willingness to be led where you would rather not go. Henri Nouwen
So when do we believe enough in Christ to go where we don't want to go? When have you believed enough to go to such a place? How did God meet you there? What did you learn about God or yourself or both together?
The answer to these questions must have endless possibilities and fantastic stories.
I marvel at how long and patiently and artfully the Father, Son and Holy Spirit are willing to work for us to trust God enough so that we will go places we do not want to go.