I wonder if those 3, anxiety, depression, and ADHD, are linked because I was diagnosed with all 3 as well. Except ADHD was split up between ADD and ADHD back then (I have ADD).
Mental illnesses and disabilities can be caused by chemical imbalances in the brain. They are very real and need to be addressed.
I went through a rough time in the beginning 1-2 years of college and ended up giving in and talking to a therapist who can prescribe medication.
This was hard for me to do since I don't like talking to therapists and don't even take Advil.
He ended up putting me on meds for depression and anxiety. I'm not sure how well they worked but I seemed to be stable.
He was also testing out different meds for ADD. Nothing worked there until we got to Adderall.
Taking Adderall cleared the mental fog in my head and I could finally express my thoughts and be productive.
Long story short, I continued taking the medications that were prescribed to me for the next 3 years while under the doctors supervision.
I didn't want to have to take meds for the rest of my life so I eventually stopped taking them (this was not under doctors supervision but looking back maybe it should have been).
Now I have been off all medications for about 6 years and am doing great.
I do still battle with all 3 (and likely will for the rest of my life) but it is very manageable now and does not stop me from thriving.
I have slight social anxiety but I have found that for me personally, facing it head on and seeking discomfort helps me combat it.
I feel like I sort of faked a "type A" personality until it became real.
I also notice myself getting down at times for no reason and combat that by staying busy and active, staying positive, eating healthy, reducing stress, and getting a good night sleep.
I also notice that my head is in a fog sometimes and I can't get my thoughts out properly or I completely lose motivation to do anything.
I've found that doing the above helps with that as well.
Also, I believe that being so open and vulnerable like you are here will only help you learn what you need to do to not only get through this but to thrive.
It likely will require continual action on your part to combat this since it will always be a part of you.
Accept it, take action, and make the best out of the life that you were given.
Feel free to shoot me a PM to chit chat.
Most people don't like to hear about frugality, investing, and lifestyle optimization so I'm always looking for more friends with those interests!