i need to detach from her and this life and start dealing with my emotional states so that i can be a good father to my son regardless of where i live or how i live.
That is HUGE... it is ok to journal and let stuff out... well, truth is there's no wrong or right in how you behave or what you do, that is true to you...
except that in order to move forward and take care of what needs taking care of (yourself and your son), you do need to detach your emotions from her.
It will show up in your writing style and who you journal about and it will take whatever time it takes for you...
It starts with stepping back and changing focus on you. Have you read the LRT and the 37 rules? Hopefully someone else can post them for you, I don't have them handy...