Pres. Uchtdorf spoke about us "waiting on the road to Damascus" for a Paul-like heavenly manifestation that wipes out our doubt. He commented, among other things, that we gain a knowledge of truth by living it and moving forward, that answers come on our feet as often as on our knees.
I note that when Saul was on the road to Damascus, he was on his feet, doing the things he believed God wanted him to do. It was in that circumstance that God turned him around.