I am a habit (routine) FREAK. It helps a lot with my anxiety.
I do things in the same order in the morning. I drive the same way to school and work. I park in the same spot (or at least the same aisle) at work, school, the grocery store, the mall, & church. I sit in the same seat at church. I eat things on my plate (separately) in the same order every night. I wash dishes in the same order. I wind down the same way every night before bed.
I also drink too much Diet Coke, eat too much chocolate, watch too much TV, and waste too much time on the Internet.
I. AM. A. HABIT. FREAK.