Tw obv for mentioning drugs

So ive been going to this thing for psychosis prefention and basically got a list of drugs i should never do? And then my therapist making me stop smoking and now they want me to drink less, which i totally get! However, I feel like a child whos parents put a bunch of restrictions on them. Im an adult, I should be able to decide these things on my own. Im just wondering how dangerous it is to, for example, do psychedelics with borderline. Bc atm it feels like they just tell me not to do it and then nothing else.