We all have set patterns and routines that we follow in our lives, they make things easier for us. If we had to come up with a new way to drive to work, brush our teeth, or read the newspaper each day, our lives would be very stressful, because we would approach everyday tasks as if we had never done them before. So, our patterns help us to do things efficiently.
Therefore, performing a chore in a certain way each time you do it does not mean that you have OCD. However, if you think that the way you do the chore is the only way to do it, only you can do it correctly, and it must be done at set intervals, then it’s possible that OCD is playing a role in the completion of the chore. The easiest way to differentiate OCD and a set pattern would be to imagine not being able to do the chore the set way. If that would not bother you, then OCD is not playing a role. If it would bother you, then OCD may be involved. If this is the case, then you have some choices, you could just live with it, or you could seek some treatment to help you to break the cycle of obsessions and compulsions.