Can a two-year long-distance relationship last until the end if I get an offer for a Master's degree in the UK?

In the middle of May, my girlfriend's application for a Master's degree finally passed, and she put in a lot of effort for it, so I'm very happy for her. But with it comes the worry about our long-distance relationship for the next two years. Before, we were already in different places due to our universities, and we always argued. I thought things would get better after graduation, but now facing a long-distance relationship for two years, I'm feeling complex emotions - happy for her on one hand, but worried about our relationship on the other. Does anyone have any experience with long-distance relationships? What kind of preparations should we make during this time to make sure our feelings can remain stable and grow?