At this point, I just pity you. It must suck knowing you're part of the reason for the failure of the team with your platinum curses. But it's a lesson you keep failing to learn from. Your guarantees more often than not lead to losses. Sadly, I do similar. When I talk to friends, if I say the Cowboys are going to decisively win, more often than not the Cowboys end up choosing that week to choke.
This season it happened against the Cardinals, the Bills, and the Packers. So I'm done predicting a Cowboys win when talking to friends (offline). I've learned my lesson.