>I need help. Im already in therapy but maybe I need a separate therapist for this.

I would suggest exactly this. Bring it up with your current therapist and see what they suggest: I suspect that your current spending habits are largely a symptom of your mental health issues.

In the mean time, sit down with a spreadsheet/notebook and take stock of your current spending habits (it sounds like you already started this) and use that as a jumping off point to come up with a monthly budget. Write it out (or put it in a spreadsheet) and try to stick with it. If nothing else it will provide you with some structure and will give you guidance on what exactly you have to reign in. Simple rules like "no more online shopping" and "fast food no more than twice a week" will be easier to follow than a general goal of "spending less money."