Dollar cost averaging really takes some of the stress out of investing. I'm so happy I started using this strategy.
I would say travel is as important as a university education, maybe more so. Traveling on a budget is the best way to go IMO because it forces you to use your creativity and usually always equates to a more memorable trip. Oh, the stories we have from traveling on a shoe string budget! Like anything else it's not expensive if you save/budget for it.