15 days in, back on my bullshit (minus the smoking)

I feel silly for thinking my life was going to magically change once I quit. It absolutely hasn‘t. Two weeks ago I finally started craving the connections and being social, I was happy to finally live a healthy lifestyle, eat healthy and work out. Now I‘m literally back at the starting point, eating like shit, feeling like shit and not even wanting to see anybody. Minus the part where I did it all stoned as a b. I literally don’t even know why I‘m doing it anymore. I feel like a failure even though I haven’t been "sober" this long for at least 3 years.

I literally don’t know what to do. I‘m still not sleeping properly and my head hurts at all times. Wtf am I even doing this for..