Moving away from bad memories can work. In fact, it's very powerful.
But you must do it with awareness.
By that I mean, you can use the new location to change your routines and lifestyle... and even your way of thinking, but you must be deliberate about it..and take great care not to fall back into your old routines and thought patterns once the newness wears off.
You can do the same thing in your old location...buy new clothes...take different routes home...get a new apartment... repaint the old one, etc., but a complete change in venue is stronger medicine.
It can backfire of course. But if you do it with conscious awareness it can work wonders, especially if you pick a place where the energy is high and bright.