Questions about rebooting

My journey is a long one but my story is short so far. I hope that this path will become something of a story that can turn into a powerful source of inspiration and can help me help others. I'm still in the learning stages though and I have so many questions. It has been a struggle so far and I wish that I would have started this process during a less dark period of my life so that I could be clearer in my convictions but so far it feels like I'm being haunted by my addictions.

I think it's Day 4 so far and I'm scared that I'll never get these images out of my head. It got to the point where after about maybe a week of no porn and then falling into a relapse, I had a really bad nightmare. That seems like the worst it will get as far as being 'haunted' but I still struggle with having images invade my head at almost every turn, not to mention when seeing women, I feel like I'm looking at obscene images and I struggle with looking at them as people. Will this end? Will my quest for reboot help with this? I know part of what's going on in my head is because of things I am going through which are becoming a painful reminder of my addiction but I know that I would have to face this eventually. Is there a moment when I know when I've rebooted? What are some things that will help?

Right now I'm just abstaining from porn and am working really hard to recoginize what my substitutes were. I am also trying to cut down on MO (like tonight for example. I can feel my body trying to fill a hole and I'm not going to let it) but once I can get my life through this one major challenge, I will go hard mode.

Any insight would be appreciated. Sorry this became a sort of introduction but I wanted to establish a perspective to my questions about rebooting. Any support is also appreciated. I look forward to telling more about my story soon.