I grind my teeth when sleeping if I don’t wear a mouthguard. Call it an affliction (annoyance, really) to wear a mouthguard every night. God consecrated this affliction1 for my gain because when I wake and remove the mouthguard every morning, I brush my teeth and the mouthguard (for its next use), every morning. My teeth are healthier (and my breath fresher) from this affliction.
Consider this:
What afflicts you? Might there be a higher purpose in it?