Excellent theory, problematic praxis.
I'd actually read this book when it was first published, and wanted to see how it was holding up. Libraries get in the fashionable habit of weeding things simply because they are "old" without bothering to check and see if the contents are still relevant. This is a horrible idea, and if your libray does it, you should be ashamed.
Based on the scientific research of Elaine Aron, Jaeger's book takes the concept of the Highly Sensitive Person (HSP) and applies it to surviving in the workplace. It is not, however, a how-to book in the strictest sense, in that it's not going to specifically tell you how to rearrange your office, or what industry you should be working in, etc. Instead -- and this is really helpful for people who don't know they're HSPs -- it gives you a way to reframe the qualities that have, for years, had people writing you off as "too sensitive," or "melodramatic," or "too much," or whatever epithets folks use when they cannot deal with your special superpower.
Jaeger's main premise is that there are three kinds of work: Drudgery, Craft, and Calling. Everybody has bills to pay, but HSPs NEED to have a calling, either in their paid work, or somewhere else in their life. They literally cannot function without a career that fulfills their souls, and they suffer more than most in "pay the bills" jobs. All of the advice is geared toward how to spend as little time as possible in Drudgery and how to make your way to a Calling.
And herein lies the major problem time has caused: this book was written in 2004, a time in American economic history when it was VERY easy to walk away from a misery-inducing job, because there were plenty of other places to go. Flash forward to 2020 and this is much less plausible, especially for BIPOC MaGes, who are often struggling to survive in the first place. The idea of having, and pursuing, a calling has become a privileged endeavor, and that's depressing as hell.
What could rescue the book, at this point, is if Jaeger released an updated edition that focused on how HSPs can cultivate resilence when stuck in Drudgery or Craft. Resilience is no substitute for societal overhaul, but it is MUCH easier to do your "pay-the-bills" shit job when it's perceived as a means to a greater end, and a resilient mindset can help HSPs survive while they're figuring out how to thrive in this weird, fucked-up timeline we're currently on.
So, should you weed it? Probably Unless it's still circulating well, which tells you something about your patrons. Put it in the book sale, and I guarantee someone will snap it up. Aron's original research and the many books that have sprung from it are well-known and sound, so you may want to replace this with a more contemporary title.
And please stop to consider the possibility that someone you work with may have this particular type of neurodivergence. Your HSP colleagues are not "too much," "too sensitive," "drama queens," or whatever other dismissive trash you write them and their gifts off with. They could actually be the folks who get you to the next level, if you're open to their way of thinking.
Not exactly recommended, but don't weed it without critical assessment either. Your mileage will definitely vary, as this is one of those titles where the librarian's professional tie-breaker opinion is called for.