I'm superstitious about numbers and always stop pumping gas in my car when the price feels good not when the tank is full.
That seems like a lot of effort. Why wouldn't you put enough gas to top off your tank?
That's because you are not superstitious.
Having obsessives tendencies born out of irrational fears can cause you to possibly develop a mental condition. Its good to seek help in order to get a grasp on these tendencies before they get out of control. Otherwise your life may become overrun with fulfilling these obsessions.
Nah, I can take care of it.
I get that you feel that way, but make sure your superstitions are crossing into a true obsession. If they do, it's important to get help addressing them.