The boredom of weekend evenings is also getting to me - during the day I am fine as I have activities. The main problem also arises with having no sober friends, so I end up going to the pub (withnon using/ alcoholic friends) having a soft drink and leaving about 10pm as drunk people annoy me.
When I was unemployed I also struggled to find things to do but as I live in London there are some free activities like museums, parks, history walks etc and they helped to keep me busy - I'm not sure if you have anything similar where you live?
My work contract finishes in 4 weeks, so I am going to try working for a charity 1 day a week and then look for some other activities.