iPhone being repaired, cannot log in to iCloud...HELP

Yes, I am THAT guy. Purchased a X from Back Market. Returned for repair, 9 day turn around time. Somehow I have managed to lock myself out of iCloud on my PC because I was using the wrong password. Sublime, no? I have my Apple id but cannot reset my Apple password from my wife's iPhone or MBPro or the laptop. Any suggestions? Any at all? Bueller? Thanks y'all.