GP's are NOT the right doc to see, you need to see a psychiatrist, they are the experts for determining the right meds and proper dosages, general practitioners are not pdocs, sure they can write out prescriptions for psyc.meds but are not the same as a pdoc, pdocs have you come perhaps, once a month after being assigned certain med(s) and observe how they are doing, they know better than a gp what to try with you and can give you pdoc feedback, gp's are good at what they do and vice versa.
It is sad that some people do not want to address any of their emotional or psychological problem, byt just seeing your gp for these kind of related things you are not helping yourself, for some maybe partially, but the type of treament continuity should be with a pdoc and even talk therapy added would be a good idea. There is nothing to be ashamed of, the thin I think is ashame is when people forfiet the chance to get better because of the stigma or shame they feel. Life is short, I ask myself why would anyone want to live it miserably when there ARE choices, many good options.
You stated that you feel seeing a doc is a waste of money, time and anxiety? That is only if you want it to be.
If you are interested in seeing a pdoc, you can even ask your gp for a referral, or check at your local hospital with their directory, see if they have a behavioural health department, they would certainly be able to direct you.
Don't give up on yourself, life is short and there is still so many things you haven't seen or felt out there, you may not realize it now, depression clouds over so much, but once getting treatment, and/or talk therapy things will get better, it is you that holds the power within, with help you will see life is worth it, so go out there and live it, enjoy what you can

In giving advice seek to help, not please your friend
SOLON