I can understand where you are coming from and wanted to say that you can PM me if you want to "talk." Let your doc know about the cutting b/c Zoloft can cause reactions in some people that make one more prone to self injurious behaviors. That probably isn't what made you do it but it is an idea.
Things get better. Even when they get worse again, they still get better again. Easier said than believed but we all try. Do your best if you can and if you can't then ask for more help like the PPs have said. Therapy is a good add on for anyone, let alone people who are struggling.
Like I said- I can understand. I hope you start to feel better soon and will be thinking of you in the meantime.