Anxiety and depression are NOT untreatable!
If you have been suffering with these issues for 7 years, my guess is that you have not been on the correct meds and you have either not gotten into therapy or the therapist you HAVE been seeing is a quack.
Before you give up on everything, perhaps it's time to start from square one.
A new doctor for evaluation of your physical health and a referral to a new therapist and preferrably a psychiatrist.
There IS help out there for you but sometimes we have to look in several places to find that which will work the best for us personally.
Giving up is NOT an option!
Peace
Greenlydia
And btw, I DO know many people who have totally, 100% overcome their anxiety and depression.