To sum up (and hopefully clarify).
Μην πλατειάζεις: not so colloquial - suitable to be used in refernce to somebody's speech, as in the example provided by Cambridge Dictionary. Searching for the term in third person (πλατειάζει) on Google News will show you that is chiefly used in book/movie/theater reviews. "...χωρίς να πλατειάζει σε λεπτομέρειες..." (without dwelling on details) is certainly said as a good thing.
Μην το/τα αναμασάς: this is a phrase I would opt for without really thinking about it if referring to something a bit more personal. "Reliving past experiences over and over again", you say, and that doesn't really sound like a context where I would use "πλατειάζω"... It doesn't really qualify for one's own experiences; "αναμασώ", on the other hand, does...
I'd say that "μην το βασανίζεις" or "μη βασανίζεσαι (μ' αυτό)", as Daeman suggested, is pretty close, in this sense.
I'd also say that the rest of the suggestions provided are more sort of all-around terms that can be used in either case, despite their marked differences "register-wise", so to speak: "Μην το ζαλίζεις..." or "μην κολλάς σ' αυτό" are certainly more slangy than "Μην εμμένεις", which sounds a bit "stiff" to me, whilst "μην το κουράζουμε" falls probably somewhere in between, but they're all pretty wide semantically...