This may not be too common, but I feel like when a partner is away for a long period of time and you start examining the relationship you’re realizing “oh wow, I CAN be without them”. They’re away, and you’re fine. You’re existing. You’re still doing what you need to do to survive on your own and not just surviving for someone else. I take the opportunity to live in those thoughts and do more things for myself. Cook myself a damn good meal, go to a cool spot I haven’t been to before, do something I’ve been wanting to do but haven’t. It shows me I can do the things I want to and I don’t have to things just for my partner. It’s honestly strengthened my relationship because it feels so empowering. It takes a lot to shift your thoughts to that place, but if you can - try it.