Sport number 1 in my home country Belgium, with the likes of Eddie Merckx, Lucie Vam Impe, Johan Musseeuw, Freddy Maertens, Tom Boonen,… grew up with it and love it.
Speed: fast-faster-fastest: crashes are just part of it. Learn to fall, get back on your bike/motorbike/skis/… and go on. There is a reason we have only 1 world champion. And are they not a little ‘crazy’, and is it not that what attracts the spectators?
Over-confident on the other hand gets tricky, resulting in risky behavior. Control the controllable, respect the dangers, explore your limits, and prepare for success. Stay in control of your actions.