It's funny, because my last record was a lot about isolation and people living in separate worlds that other people can't even understand, which drug addiction is the perfect negative example of.
Keep writing. Try to do a little bit every day, even if the result looks like crap. Getting from page four to page five is more important than spending three weeks getting page four perfect.
Good as is discourse, silence is better, and shames it. The length of the discourse indicates the distance of thought betwixt the speaker and the hearer. If they were at a perfect understanding in any part, no words would be necessary thereon. If at one in all parts, no words would be suffered.