I think I could walk into any music shop anywhere and with a guitar off the rack, a couple of basic pedals and an amp I could sound just like me. There's no devices, customized or otherwise, that give me my sound.
You build on failure. You use it as a stepping stone. Close the door on the past. You don't try to forget the mistakes, but you don't dwell on it. You don't let it have any of your energy, or any of your time, or any of your space.

