Aww you lot are mean a bunch
Op has said that he has mental health issues (probably depression) and I have gleamed from the thread that there are 2 people living upstairs in a converted house (one flat on the ground floor - the op's, and one upstairs) with a shared access/ front door.
The upstairs occupants are a bloke who was cool with Op and was first to move in, and a girl/ woman with a child, who has since moved in (approx 1 year ago) and its since then that its has all gone to ****
Obv.'s your all right in saying that you don't really know why its all gone to **** aside from intimidation from the bloke at 3am/ middle of the night on more than one occasion (I guess) and that the girl is having a wild time with other guys when the bloke is out.
Add that to the domestics/ door slamming etc that the Op mentioned and that this seems to have been going on for a long time makes for a pretty unhappy situation.
I am guessing that the Op is probably not in a financial position to just up and move out, take a holiday or go and live in a hotel for a week or so, which is adding to his mental state of mind
Op is clearly very fragile and has a commitment for work to attend to - I am guessing that since all this started he hasn't left the flat unless totally necessary - and he doesn't feel that his flat is secure enough to leave empty for the day
Hopefully the Op is getting some help with his mental health issues. I just wish he would explain the situation a little better - but you lot are horrible at times. Compassion and understanding is dead on here. Yes I have made some assumptions about the thread, but honestly!