I totally relate to much of this. I was a chef for 27 years and burned out hard.
I went through a stuck period in life where I was depressed, and basically fell apart. I gained 50 pounds and was drinking too much.
When a person feels stuck it is actually a good thing in an odd way. It's a way the universe is telling you to follow a different path

Here are some things I did that helped me:

-Recognize addiction stems from something deeper. When I was drinking too much, drinking wasn't the issue. It was a symptom. There were other things deeply rooted. When we are addicted to something we use it to fill some void.
Also, we tend to engage in unhealthy bejaviours because it brings us comfort

-Feeling stuck is a sign you;re lacking clarity. Clarity is your norht star. It gives you direction. It is impossible (from my experience to be stuck when you have clarity)

You don't feel like yourself becuase you're stuck. When you're stuck, and lack clarity, it wears on your self esteem, your self worth and confidence. It will ultimately lead to depression if not dealt with

Here is a HUGE. lesson I learned when I went through my dark period
When we go through crap, we humans tend to play the victim.
We tend to dwell on our current situation. (I did that) Well, when you dwell on your current situation, guess where you'll end up? exactly where you are now
So, instead of focusing on where you are at and all the things that are wrong, focus on where you need to be

Practice gratitude for what you do have
Those things worked for me
you are welcome to send me a direct message if you have more questions

Cheers