2 years in Monaco, 18 months in Denmark, 18 months in Dublin, and a year each in Aix-En-Provence and Paris, would go back to any of them in a heartbeat, some brilliant life experiences that I never imagined I would ever have and I think it certainly developed me as a person and challenged and changed my views on a lot of things.
The only advice I can offer is if you go embrace it until the pips squeak, make the very most of every opportunity to see and do things and approach it all with an open, inquisitive mind.
I travelled extensively from all of those places because they made possibly so many things I'd always dreamed of but never expect to see and other things I'd never heard but still dream about, so many experiences that cost nothing but will live with me forever.
Apart from getting wed and having kids, the best thing I ever did in my life, for me as a person, was living abroad.