Affiliate Marketing Secrets

My horse is terrible about taking the bit.
He came from an abusive situation and it generally terrified of it. We’ve tried putting syrup, molasses, fruit roll up, etc. on the bit with no luck.
He’s a very picky eater and is much more affection reward affiliated. Are there any ways I can make taking the bit like a game for him?
I know there are methods out there that make taking the bit like a game and will make him look forward to taking it but I can’t find a decent explanation of how to do it.
Help?
PS- if you DO know how to help, could you maybe explain it in a step-by-step process?
Thanks!