Keeping your excitement for a new relationship in check

Met someone new. Well not really, I've known her for over a year. But something potentially beautiful is brewing. It's going to be long distance too, at least till she finishes grad school. I'm visiting her in person next month. And I find myself feeling excitement again. It's getting close to 4 months since I was dumped and I finally feel like I'm fully healed from that and ready to start something new. But at the same time I don't want to overextend myself in my excitement and get burnt.