I believe taking the odd valium, BUT as with most things moderation and sensible control must be applied, then there is little harm and possibly can do you some good in the short term.
I was prescribed diazepam many years ago after losing my job following several failed back operations. This was before I sought counselling help - which proved more beneficial. The drug was helpful as a sticking plaster until I was able to come to terms with my situation BUT it was not a solution to my problems, that came more from within me.
Several years later, diapepam not being prescribed all those years, I find myself using an odd one or two again but not for anxiety type issues but for the terrible back spasms that I now get. Pain meds and my TENS machine isn't enough to deal with those, at times.
So I think that diapepam has a role in being helpful but certainly be awre of its habit forming nature.
I realise that this thread started some time ago but I still thought it useful to post what I have