—> Don't just say you're worthy that doesn't mean anything. It's not charming or personalized and there is no support to it. Where is the fact to that? Instead affirm something you know is true and that there is evidence for. Ask other people for evidence. Try to see stuff objectively which is hard. Lot of the time you can argue with a "feeling" or an "affirmation" but you can't argue with cold hard logic and fact.
—> Make your affirmations believable. Use neutral affirmations if positive affirmations are just too hard. Weirdly enough your affirmations should incorporate the whole lazy habit thing where you don't try to make them so unbelievable. It's also graduated exposure. It's almost like one step at a time thing.