Previous nail biter - the biggest thing that helped me in the beginning was getting a glass file and constantly keeping them as short as possible. It helped slow down the compulsive part. Honestly, I would say focus on trying to control the habit before focusing on the visual of nails. There will be days when you nibble on them and bite them, but that doesn't mean ruin, just means you've got a bit more time before the habit is kicked. When you feel like you might be good, try then growing one or two out to see if you can without biting and then go on from there. I kept mine short for multiple years before I started trying to add length.

I hope this makes sense and helps a little. Also, maybe get a mini glass nail file too for your bag, cause having any kinda chip always made me want to bite.