This page in a nutshell: People are tired of Wikipedia but can't leave it! Help them.
Sometimes, Wikipedians can spend too much time on Wikipedia or are constantly told by their friends (virtual or not) to "WIKI" something. e.g. to look something up on Wikipedia. But this may happen too often. Some solutions include taking a Wikibreak. But some people are Wikiholics and can't stand being away from Wikipedia.
Please give comfort to these people? and make sure that they get all the re-assurance that they can get.