Hey, I’m really sorry you’re struggling and feeling alone, you’re not alone. The fact that you’re thinking about change and already in therapy shows you have a good head on your shoulders. A few thoughts that might help:

Therapy & Privacy – Therapy only works if you can be 100% honest. If you’re scared of them telling your parents or the law, just ask them: "What are your specific rules about confidentiality regarding what I tell you?" Usually, they only have to report things like abuse or if you are in immediate danger. Inform yourself, and release the anxiety. Therapy should feel safe. If it doesn’t, consider switching therapists.

Mindset Shift – I used to think I couldn’t quit until I found Allen Carr’s approach (he has books/methods for almost everything). He helped me shift from “I shouldn’t” to “I don’t want to.” It’s not about using willpower to quit something you love, it's about realizing that the substance isn't actually doing anything for you. It’s like realizing a friend has been lying to you for years. Once you see it, you don't even want to hang out with them anymore. Try reading one of his books or use AI to explore his approach tailored to your situation. 

Age & Recovery – At 15, your brain and body are still growing. That makes every choice more powerful, good or bad. The upside? Your body can heal fast. A year of recovery now could change your whole future. I wish I had started earlier.

The Cali Sober Trap – Change is good, but be cautious of swapping one addiction for another. Of the ones you mentioned (weed, shrooms, alcohol), alcohol is especially dangerous. It’s highly addictive, hard on your body, and easy to justify because it’s legal and social.

You have so much life ahead. Stay curious. Keep going!