Do you normally use drugs such as coke, speed and molly? If not, then chances are you're feeling particularly bad due to the bender you went on with such hard substances.
I know it's hard, but abstain from alcohol for a while and you'll level out. It seems to me that dabbling in drugs always comes with a price. There's almost always going to be one drug that you particularly like, you keep going back to it, and thinking about NOT having it is scary. I know this is a false feeling though, because a person (at least myself) can feel this way on and off about different drugs at different times. For example, I first started out smoking weed daily, and got to a point where I could not imagine myself going through life without it. Then came MDMA, started messing with that, forgot weed even existed (for a while), and began to think life would suck without rolling. MDMA bit me in the ass so I stopped, started rinking like mad every day to battle the depression, and bam whaddaya know, life started to seem scary without drinking. Then I got over that and started messing with opiates, and started feeling the same about that, like life would be awful and scary without it. Then I moved past that and started with depending on weed again. Then I picked up kratom, and started to feel the same way yet again, like life would be unbearable if one day I'm without this. Now, I can honestly say I'm at a point where I look forward to a day in the near(ish) future where I no longer 'need' any substances at all in my life, don't think about them, don't crave them, and it does not seem scary or unreasonable!! I also do set days for myself here and there where I do not allow myself to use anything at all, no drinking, no kratom, no opiates, no weed, nothing. Just so I get a little reminder every now and again that I am, in fact, in control.
The point of my story is that it's easy to feel psychologically dependent on one substance, but that substance can change often. The problem isn't the substance, it's just a general addiction to the drug lifestyle, and that is easier to overcome than you may think!!
Sorry if it seems like I'm just rambling. I hope it helps..