Hi op
I'm so glad your still here with us
You sound like you are fighting against what might to be appear outside forces
Or voices that are conspiring to get at or stop you.
Might I suggest that at the moment, you treat the negative thoughts and "stuff"
As a real entity that means to cause you harm, and not keep you safe.
Might I also suggest that you give this "entity" a name. Give it a name of something you really hate or don't like eg Marmite for example or that's makes you laugh, something silly sounding.
Then when this "force or feeling" raises its head you can treat it accordingly
Fuck off marmite your not helpful right now, or spongebob your an idiot and make me laugh
This can allow you to take some control over something that's been in control of you , it can feel silly or even pointless at first, but it allows you to focus on what you know is "wrong or bad thought"
Also...you probably know the breathing technique in for 7 exhale for 7 counting in your head .
Imagine the in take of air as a favourite colour, this would be the colour of say the sun or warmth or something comforting to you.
The exhale would be a dark colour representing the bad thoughts and feelings
This is a really quick self focussing, cycle interrupting excercise
People around you won't even notice you are doing it
Keep on keeping on op, and the house thing sounds ideal, a complete break from your surroundings and people can give you a whole new perspective.