I feel like giving up

I'm so close to almost ruining my progress just to get some relief from this depression and anxiety. I don't know why I'm posting this, I just don't know what to do, it would be so easy for me to just cut, just once. I know it would be more though, I wouldn't be able to stop, the urge is so intense, I feel so restless and agitated. None of my coping strategies are working right now, I have an appointment with my pdoc next week, I don't know how I'm going to make it 4 more full days. That seems easy but it's hard to get through a single hour when I feel like this.
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“All the darkness in the world cannot extinguish the light of a single candle.” -St. Francis of Assisi
Diagnosis:
Schizoaffective disorder Bipolar type
PTSD
Social Anxiety Disorder
Anorexia Binge/Purge type