The trip to the store seems to be a reference to the plans he has each day, that is he has nothing he has to do each day that will get him out of his flat. On the other hand at the end of the article it mentions that he's written a book, is actively seeking publication, and has started to think about his second. So he is in fact being productive. His statement about adapting was to an interviewer who asked about pay. He may just have wanted to make it clear that he doesn't expect to earn anything like what he was on before. Taking a massive pay cut requires adapting. Going from a $225,000 lifestyle to a $30,000 one is a hell of a difference.