oh my goodness ... EMBRACE it ...
i've lived away from home so many times ... Maine (from New Zealand), Wellington (capital in NZ) from a small town, Oxford, Glasgow, Auckland (NZ) ... and am currently looking at New York or Dubai.
I've been a mess in some of these places (but I've managed to get through it without anyone really knowing). Embrace a new opportunity ... it IS a good opportunity ... don' t let it slip or let 'depression' get the better of you.
Develop ... get some backbone ... be strong ... YOU WILL BE FINE