Don't get upset over little things. Never end a call or conversation on a bad note - always talk things out with your partner. Avoid adding unnecessary stress to their daily life. Simple gestures like sending good morning and good night texts, or little things that remind you of them, make them feel loved.
Make an effort to remember the small details about them - like how they like their coffee, new things they want to try, and important events coming up in their life. Trust them and keep in mind that they have a life outside of your relationship. Don’t make everything about you and your life. And, please, avoid starting drama over insignificant things (like if they didn’t call you exactly when they said they would).
These small things can help keep your long-distance relationship strong and healthy!