^ What you need is an activity or a group to join - some sort of social venue perhaps, or something that at least takes you out of the house.
Back a few years ago when I was at my isolated stage at home, I used to take a middle-aged relative and two of her friends out for a drive on Saturdays as part of a voluntary-related organisation. All three would normally not get out due to various issues each of them had. My point is - at least it got me out of the house and it was a nice outing if it was a sunny day. We'd often go for a bite to eat at a cafe or something. And it got me a bit of social interaction.
You already said you go to a gym so that's a good step forward. Do people talk to you there and have you made any friends?
Down here I have my walking/badminton/tenpin bowling groups. I made one fairly good friend, and plenty of aquaintances.
Whether there are many groups and clubs and organisations like that in your area, I've no idea.
about the social activities, i dunno with what social activities i can get involved with. i actually went down to the town hall 2 years ago and got involved with some committee which i don't even get involved in. i get extremely shy when i'm in a group where i just shut down and won't even say a word to anybody. that, top with not being confident with what to say, i just won't say a word. the thing about this place is that everything is spread out, far and few inbetween. you have to go out and search for it. if you don't have a car or money, then you're assed out so it's like why even bother to begin with?
i go to the gym with my brother and my friend whenever they're available to go. even though i'm shy and etc, somehow believe it or not, i can actually be sociable when i reach a comfort zone though i prefer to interact with people one on one and sometimes in a group, if i know everybody well enough. i also actually attract people towards me instead of reaching out to people to. a lot of times, i don't even seek it friends or people to talk to. it just happens. i'll say something or they'll say something and before you know it, we're talking and then we're friends. however, i am not good at keeping contact with people as in my shyness will come in and i'll shut down so i'll have a bunch of people that i should be saying hello to, keep touching bases with but i don't say anything to them. there's tons of numbers on my cell phone of people that i haven't said things to in months. it's ridiculous. it's not intentional. it's that i'm scared and the easiest way to deal with that is staying quiet.

anxiety is terrible. i wish to be a more social person where i can talk to everybody without being afraid and keep in contact with folks but something in me just keeps me from doing it.
and like i said, over here pretty much sucks. there's virtually nothing to do. you have to look everywhere and IF you don't live in an area, have money, or let alone have reliable transportation to even get there, you can find yourself at home chilling alone. the same thing applies to work. your options are limited over here. the only good thing is that nyc is an hour away so that makes up for it.
i'm talking a whole lot about myself and etc where it sounds like i'm self centered and making excuses for the way i am. i apologize for that but i'm just saying, i don't wish to be this way BUT at the same time, everytime i push for better, it seems like it's not enough. this is why i'm trying my hardest to go to a psych ward to figure if there's a problem or something i could do because i could have been doing a whole lot of big things eons ago if my head was in the right place. however, i'm scared to change and worst off, i actually have people that are encouraging me to stay this way and at the same time, act like i can simply change at the drop of a hat. as if i'm not doing with anything. it's annoying.