I'm really hoping that through posting my situation, someone will be able to give me some tips on how to start feeling better.

I had an official diagnosis of depression earlier this year. I feel I'm at the end of my tether and have had enough.*
I found my negative moods growing more intense which led me to go to see a doctor who officially diagnosed me with depression. However I would say that I've felt like this in milder form for far longer.

I've been prescribed medication several times but have chosen to not take it or to stop part way through, idiotically, including Zoloft/ Sertraline. I guess I thought I could get better by myself. I am now on day 5 of Prozac/ Fluoxetine which I am taking for the first time.

Also, I am beginning to be concerned that I have something else, borderline personality disorder, although I think that the utility of being labelled is questionable. I find myself swinging between moods, often very intensely. These can seem irrational - when someone asks me what's wrong I often cannot justify them! These intense lows and my resistance to accepting help*are responsible for destroying a relationship with someone I love very much.

I've been known to be impulsive, sometimes I overeat and purge, not on a regular basis but when bored or emotional I eat to make myself feel better but then become afraid of getting fat. I have contemplated suicide but would never actually do it as it would hurt my parents too much.
I crave friendship and intimacy but when I think about it I realise I am not good at maintaining that many friendships.*I make big, bold and exciting plans but often struggle to have the self-assurance to actually see them through.*
I really don't like myself all that much.

I don't know what I'm asking for- tips for coping, perhaps. I feel very lonely.