I'm no longer under 30, but I will say that when you are under 30, you can take advantage of working holiday visas. You can come to places like Australia and spend a year here following the harvest trail, for example. Cycle and tour a bit, work a little bit, cycle and tour some more. Or if you already live in Australia ... you can get working holiday visas for Canada and places in Europe. Once you hit 30, you can't do that anymore.

So take advantage of those working holiday visas to see the world!