What a pain the job centre is... I haven't had to use them much apart from when I was 19 for a short period and then about 5 years ago for 2 months. Never again!
Could you volunteer at weekends or evenings? another thing I've always wondered about - WI (Women's Institute) this has got really trendy in past few years first visit is free then you pay. Just an idea to get you out.
I personally don't like book clubs (bad experience with a man from one years ago!).
Can you change your GP or see another one in same practice? Good on you for not being like your mum (on medication?). I know a few people a good friend who was on meds for depression a few years back, I don't speak to her now but I know she manages a card shop. i think it was more someone helped her out though as well.