They're not for everyone, but if you're committed it can be very rewarding.
- Communication is a must. it's important in all relationships but even more so in long-distance ones, since you're not often with each other. Arrange regular Facetime sessions/calls/Skype dates etc, sometimes texting really isn't enough. My day can feel a lot better when I've heard my boyfriend's voice or seen his face.
- Trust. again it's applied to all relationships, but you have to trust in your partner. if you're constantly paranoid/jealous it's better to avoid LDRs because these feelings will just accumulate to the point where you'll be doubting why you're even in a LDR.
- Plan. Plan a lot!! For the short-term (when you'll visit each other next e.g. summer/winter break) and for the long-term (are you planning on living together? in which country?) But don't put immediate pressure on the long-term plans if you're in a new relationship. Just thinking about your next visits.
- Don't be obsessive. If you're a clingy person- try to tone it down. It can become suffocating for your partner. You'll also get stressed wondering why they don't reply to you quickly. Everyone needs some space- even in an already long-distance one. Remember to have a life outside of your relationship. Sometimes it can be hard to think about anything other than the next visit, but just try to enjoy your life- continue doing your hobbies/going out and experiencing new things.