If you are not sure and things are working out OK for you in Britain I would advise you to stay put unless you are really committed to coming here. Life can seem wonderful here when you visit for a holiday but I would question why you would give up a comfortable life for the uncertainty of Oz. A lot of people say "Go for it" but it can be quite tough once the novelty of nice weather and beaches wears off and you find yourself in an unfamiliar country far from friends and family. You really do have to start again from nothing, and you need some motivation to do that. There's no easy answer - if you're one of those people who are really fed up with Britain and don't see much future for your kids etc then it may be the right move. We moved here because we just could not survive financially in the UK and we saw our neighbourhood just deteriorate into a really grim state. If we'd been able to get by and liked where we lived I think I would have stayed.