My Boyfriend is Joining the Navy. Advice! 🇺🇸❤️⛵️⚓️💕

My boyfriend is joining the navy in a month. We've been together for 8 months and really love and care about each other. He really wants to make it work. I just don't know if I can handle a long distance relationship for 4 years. I know these relationships don't ever work and I'm looking for some encouragement. Please help! Looking for any advice on how to try to stay happily together. Thank you!