How long does it take a brain to heal from chronically watching pornography?

The answer is different depending upon the specific person; Transformation can happen quickly for some when they stop watching pornography; it depends on how long you've been watching porn,  how often, how intense, and how much at any given sitting. The longer, the more frequent, and the duration of those things will impact how hardwired your brain is. These things hardwire the brain to need pornography. You need it to escape a pain you have inside that you might be aware of or unaware of. 

Porn acts as a pain reliever, like an opiate in your brain; this is how you get hooked and find yourself watching more and more per day, per week, with increasingly graphic or violent content or into fetishes or things that cross your morals and ethical boundaries. That's how you know that it is becoming hardwired. This is called Tolerance and Escalation, which are indicators of addiction.  

Often, men don't see what is happening within them and to them. That's why I'm here, to help. How does this transformation happen? How long can it take well when you stop watching porn? It won't be easy unless you have some behavioural strategies I can teach you. They will make it much easier for you. I'll give you something to do to replace that habit and help you move forward. Within a month, you can feel and start performing differently. Things will start changing in your brain quickly because you're not reinforcing the hardwired pattern, especially if you're hardwiring in a new, better one and starting to rewire your brain. You can begin to feel different quickly. It takes time to lay down the new neural pathways and have them be there for the long run. 

That's the long answer, but you can feel better quickly when you stop watching porn and start putting some different behaviours in place.