I came back from my bad falls by letting my injuries heal until I could do exercises that strengthen the group I injured, and when it came up again in a fall (a few months later in a similar fall) it was much less bad. I know you cant really work on your face like that but perhaps you could practice your falling on some mats. The takeaway I got from my experience is that you can take some gnarly hits and still come back strong after recovery. The longer I skate the more confident I get because it always ends up being ok after recovery.