Hey. I also have 5 year old son. Looking at the date you post, and based on your post, you probably already had another run. I hope I am wrong, but.
The last time I got sober, I did not care about my son, my wife, money, house, nothing. Not a G. D. Thing. I only cared about me. I have tried to save my marriage, my business, and all that. I did not care whether she will stay or not, whether I would see my son again or not. Those were not issue.
The issue was tonight. How could I go through tonight without drinking. My wife left to her family in Califonia with my son about a month before I stopped drinking. I always had my son's picture on my night stand. I removed the photo. Any thought, I mean any, which would lead me to self-pity, I could not afford at that time.
If you have to look for a reason to stay sober, I do not think you are done yet, my friend. I think that is the most kind thing for me to tell you. I feel your pain, believe me.
Remember this, too. The blessing does not stop with you. You have a son. He has 4 times more chance to be an oneofus. Hell of a thing, isn't is? Being an alcoholic. It takes away all you got, and all you ever will be.