Invariably every church congregation has a large segment of members who are filled with anguish because they have a sense of "calling" to preach.
But most of them in my exoperience spend twenty years waiting for some outside force to drop speaking engagements in their lap, instead of actually going out and getting the gigs that will put them in front of the people who they feel so desperately need their message.
Every wanna be minister, should have a mailing list with a free audio, and they should ADVERTISE in it that they do speaking engagements.
They should encourage others to share their free audios and put even more people on their list who join for the free audios.
This will create a buzz, and people will say "Who is that guy"
"Well he says he is open for speaking engagements..."
If your newsletters even produce a half a percent response rate and you have a thousand people on it, you are going to stay booked solid before long.
So if you are a person who feels a calling to preach or something like that- start a newsletter- hey people are looking for your message and they wont find it if you are in some room alone crying about how bad you want to minister, and waiting for a rainbow to appear.
Start a newsletter and take it by force.
Hope this helps someone.