Sorry, it's buried in there, and it's a lot of words...

Depending on your level of anxiety (assuming it's not causing heart-palpitations, etc.), here's what I'd do:

Go to a long, low-to-no-traffic area with a long hill. Take your feet off the pedals. Ride down it, coasting entirely. Make sure your brakes are working well before this, of course. This will (hopefully) teach your brain to not panic if your feet loose control, because you still have your hands to steer and to brake.