That's a coping mechanism, or habit you use to comfort yourself. I did it for years until I read a book called "At last a life" written by Paul David. He also has a website if you're skeptical like I was. Its called anxietynomore.co.uk
I highly recommend you read the book or at the least loom at the site. Its about a man who duffered anxiety and psnic for 10 years, he writes about and shares things that most would be afraid to tell a therapist for fear of being tossed in a hospital. The disturbing thoughts and images are all part of anxiety, so is the blurred vision and feeling disconnected with yourself and feeling like a zombie. Its all explained. I had a breakdown last week and searched google for an answer when I accidently stumbled on the website. Im sharing because things were explained so well and gave me an understanding on what and why I felt the way I did. I had the same rituals from not eating a certain food, wearing a certain pair of socks, body wash to deodorant. I was a hot mess, I've been there and I have dropped a lot of my weird habits after reading the book. Its not by a Dr. Its a real man that overcame anxiety and explains in detail how, its not an overnight cure, but you'll feel a weight off your shoulders just knowing you're not alone and what your body is doing. I'm sharing because I think this could really help you out, you've realized that you have rituals and I did too. I really hope you get the book, or browse the site and consider it. If you need to talk in confidence with no judgement, don't hesitate to send a private message.