perhaps a vision board, or drawing a picture of your desired outcome might help so when you focus you can look at a visual image of your goal. there have been times where i've just made a list of things for my spell, like if i cast a money spell, i would write a list of ways the money could come to me, like a raise, bonus, check in the mail, increased savings. but when i'm casting the spell what i focus on is my bank statement going up in number. these spells have worked for me in the past, might help you.
Melody, I don't know if you'll see this, but I just read a post on another board which may be applicable to having aphantasia, applied to visualization:
""As a chess enthusiast, I've always been amazed by watching blindfold chess, where the master is told what moves are being played and calls out his response. A strong player can carry this feat out on multiple boards at a fast speed.
They all say the same thing ... that they don't have a mental image of the board, but rather they just understand the relationship between the pieces. In other words, blindfold play isn't as much a special skill as it is simply a byproduct of being very strong at chess.""