The Way I See It...
Well, for a lot of photographers, im sure at a young age or through some encouragement from school, found their love for photography. Its born from a desire, a deep passion to create or reveal something that was already there.
Honestly if you are a people person I'd say, set up a few sessions with someone and watch them come from a shy, reserved place to being fully immersed in the conversation that's being brought to the table.
Step out of your comfort zone...It'll be okay.