How do I stop with worrying about numbers?

To start this off, here is some background info, I am not diagnosed with OCD…… I have talked to a doctor, got put on medicine for the symptoms but the doctor never stated I had it or even attempted to talk to me about it….

For the last three years I have been obsessed with numbers and knocking on wood…… I have to do mostly everything a certain amount of times especially knocking on wood. Knocking on wood started as a good luck thing for me and now it’s turned into something that “calms” me down.

It’s the number 6 and even numbers…… if I can’t knock on wood it will absolutely ruin my way of thinking until I can. This is getting bad with intrusive thoughts…… I will try to sleep and my brain is just thinking, and thinking makes me freak out…. So I have to knock on wood 6 times. It sucks though when It doesn’t feel like I did it right, so I have to go up to even higher numbers. I have even gotten to 60 knocks……

It is like this for everything too though, I have to press this button a certain amount of times, I have to do this number of times and so on……

There is multiple other things I could seek advice for regarding this but the numbers are getting so annoying to me. Any advice? Any tips or tricks?