I wanted to know if the community here can offer some techniques that deal with fear and spontaneity.
"Overcome regret and fear through meditation. Join in harmony with the universe through the kata."
I once had a dream like you describe. I was walking and suddenly a guy came up to me, reached into my coat from below and fished my wallet out of the inside pocket in an instant and ran. I chased him right into a gauntlet of guys who were with him and they all came at me at once. One guy grabbed me two-hands-on-two-hands from the front and I couldn't do anything. And I woke up in my upper room at the yoseikan, where I was living. Soon after that, I was downstairs on the mat, working with another uchi dshi on dealing with that attack. Very easy.
So take your own feeling of fear and meditate on it, then keep that in mind as you train.
Best to you.