How can I deal with extreme sleep deprivation?

I get bouts of no sleep sometimes upwards of about 6 days sometimes a few more consecutively. I’ve been to my doctor. Several doctors. I was put on ambien. Then it turned into an abusive addiction so I quit myself. (Since the ambien I have had trouble with pills and alcohol) One thought I had bi-polar. Another is saying I’m depressed, which I agree with based on things I’ve done and how I feel, but I cannot sleep!!! I need sleep to start getting better. Honestly I have taken valium that wasn’t prescribed for me and just got plastered off of it just to get knocked out for a weekend of sleep. I’m reaching out to people who are close to me. They are telling me to admit as an inpatient. In all honesty, it is very scary. I’m delirious when I go so long without sleep, I never know what will happen. What should I do?