There was nothing that made him want to leave the house. The world seemed hostile and uninviting; waiting to trap and mock him. A life of action seemed to evade him, no matter how much he willed it into existence. There was nothing but his own mental landscape and how it quickly it turned on him. Unfavourable memories returning like they were on loop. He slept as much as possible; awakening only to eat or to chat with people he barely really knew on the internet. When he wasn't in his bed he could smell his bed inviting but sour. He distrusted those close to him, waiting for them to prove his paranoia to be true. He spent days pondering things of zero consequence and comparing himself to inconsequential people.
If he bothered to wash at all; he sat in the bath looking at his kneecaps, trying to produce a thought that would change his circumstances. Transcendence and an existence outside of his own body and mind didn't seem possible. He was suffocated by the vividity of his own imagination coupled with his inability to overcome his own anxieties. When they came, social invitations were quickly turned down; the act of interaction and fostering relationships seemed superhuman. The task of leaving the house seemed herculean. He neglected his talents and watered his insecurities like plants until they were deeply weeded in his psyche. He ate infrequently; destroying a once taut and capable physique.