Beliefs & definitions (which are a similar) are everything to your experience here in the physical realm.
My long held belief that 'everything is always working out for me' has got me through some tough situations.
Up until very recently I didn't believe in the existence of evil. It wasn't until I redefined the word that I could see & identify evil action. It was the associated judgement/weaponization that came with the word that I disliked.
I hope this helps: