Hi,
I'm really sorry to hear this. Its horrible what you are going through. I found myself in a similar situation a while back, fed up of life going wrong and not getting to where I we was working towards, years of things going wrong...and I cracked. Lost my girlfreind (my own fault), and ended up having to move in with my parents.
The loniliness, faith/lack of trust could easily tie in with depression, athough you so seem isolated. I am not sure what to suggest here, because meeting people could help eleviate this. Can you thing of anything you can do to meet new people?
What is your day to day life like? Do you do anything or just stay in?
You are not a looser, you are not lazy and this is not your fault. Maybe in the long run, some changes may need to be made, but this does not mean it is your fault. The counciling could help with this. I find with the mental health service, that you if you feel strongly about something, you need to put your foot down abit, I know that isn't easy to do always. You desrve to be taken seriously, and it is the doctors job to listen to how bad you feel, so dont' feel guilty about telling him/her.
Take care,
Steve