I had a similar experience this summer. Since May 12th, I've used my bikes for transportation. Only time I drive is when my wife and I go somewhere or I go to an out of town group ride. Our plan is for me to ride through next winter, not to tough where I live, and sell my car. I can't wait, bike commuting it just so much fun. I don't even like looking at my car anymore.
Two things I had to get over. Riding in the rain and riding in the dark. With the right equipment, which I got, neither is a problem. However, I had to get over both of them. I didn't allow rain or dark to stop me from riding. After a few night and wet trips I realized it was no big deal.
Best of luck on your journey!