Hello zboy: This appears to be your first post here on PC. So... welcome to PsychCentral. Chronic nose blowing is not something that is a problem for me. I do tend to blow my nose quite a bit. But that's because I'm old.

I noticed, in a reply you wrote to another thread, that you take medication for OCD. So I would presume your chronic nose blowing habit is related to your OCD condition. Here's a link to an article, from PsychCentral's archives, on the subject of living with OCD plus 3 articles that discuss how to change a bad habit:

Living with Obsessive-Compulsive Disorder

7 Steps to Changing a Bad Habit

The Golden Rule of Habit Change

Science Says This Is How to Break Any Bad Habit

I hope you find PC to be of benefit.