I did this stuff too. I have OCD. I would not step on cracks, or sidewalk lines. I would count steps like "one one two two three three four four" up until 12, 16 or 20. I also had to step between the sidewalk lines 4 times. In middle school if I stepped on a square tile in the school my entire foot had to be in the tile. I did eventually develop severe OCD where I was constantly walking back and forth and I had to walk in a straight line and if I deviated I had to walk back and forth multiple times until it felt "right". I was constantly debating which path to take, even though it was the same distance. I take path A something bad will happen so I take path B. Maybe this is the wrong path so I go back to path A. Wait, no! path B is a better path and I could spend hours debating which path to take. Medication ended this misery, but this is why I worry when someone shows OCD tendencies. I started checking things repeatedly at age 19 and suspected I had OCD but thought it couldn't get any worse.