Why do i have anxiety?

I have the EXACT same problem (even with the number three) and what we have is called OCD (Obsessive Compulsive Disorder). We both have these anxiety problems that manifest into different rituals (like always doing something in the number 3) to alleviate the anxiety. They're called superstitions, and compulsions.

It's form two things: A chemical imbalance in the brain, and (normally) deep-rooted psychological scar/stressors that we've had when we were younger. Failed impressions, betrayals, lies, etc. all have a connection in this. Normally, our psychological and physiological state are connected, so it can be either the psychological problem, or the chemical imbalance, or both.

Treatment is usually in three forms, two being psychological, and the third being medication. The docs normally give you a bit of two things, normally involving medication, as it tends to be the fastest and easiest ways to "help" you. Unfortunately, the drugs in question tend to make you sleepy and less "aware" as we are constantly on edge. I used to take both psychological help and meds, neither seeming to do much.It all depends on my present state of mind now. If you want to talk more about it, let me know :)

OCD

I think the guy above me sayed it but you probably got ocd with paranoya, i had anxyety problems do to ADHD but not neay as suviar, you shiold chek with a doc, cuz it is not the "norm" it is a disease. And plus doc. shod know, he (or she) is the persont to trust, they wount let you be harmed.