I am not trying to knock your naturopath but brain nutrition is quite an elementary concept. You should have been directed to the basics long ago. The fancy concoctions are usually overpriced for the nutrients they provide. It is not uncommon for naturopaths to sell these over-priced concoctions.

I suggest starting with the Vitamins and Supplements basics. The L-Tryptophan and L-Theanine work "with" your system to help with stress. Straight GABA does not get into your system properly. I would highly recommend them before trying an SSRI. SSRI's can be a miserable existence.

Regarding permanently damaging your brain. Yes you did. Any brain damage is permanent. BUT, that does not mean one can not overcome the limits the damage has caused. Plus, most of the permanent damage only manifests when under stress, not during normal low stress activities. So, the key thing for you is to get control of your anxiety levels. It does not sound like you have suffered any cognitive or memory problems. Slowed processing is not as problematic as the others.

A very common injury is to the part of the brain that filters out stimuli. It is important because too much stimuli getting into the cognitive processing center can cause a difficulty focusing and staying on task. Reducing over-stimulation can be a big help with this.

So, get started with the basics. You likely have weeks before you will start to see a difference. Good brain nutrition starts by helping your brain detoxify. Only then can it start to heal.

You have lots of time ahead to get your career going. Take it slow and you will be fine.

My best to you.