#allsearchingforsigns

I think the first thing you have to tell yourself is that it's okay to miss her, it's okay to be sad, and to cry about it because that's normal. Because if she's important to you it's going to hurt. I might as well make a list so...

Remember it's okay to be hurt because you miss her, that it's not a weird an unnatural thing.

It's okay to cry about it. Emphasis on how okay it is.

Remember the good things that you did with each other, whether it's holding hands while you drove places, or ice skating, or making new inside jokes, or just sitting there and looking at each other and realizing how much you mean to each other. 

Remember that you can have those good moments again, that you will get to see each other and get to finally remember what it's like to hug her and kiss her and just be around her.

Don't let it consume you. This is one that I have a lot of trouble with too, just sometimes it's really hard to focus on your future and not the present when you're sad and all you want is to be able to fall asleep next to the girl you're in love with. I know it's a hard eating feeling when you miss someone you love, but chances are she's going through what you are and at least you do have each other to lean on because if you say that you miss her she's gonna be like "yeah I miss you too, do you want to talk about it?" and even if you don't want to she's going to make her best effort to make sure you're at least okay. She'll give you bad jokes and cute cat videos to look at.

Don't give up on hoping that something good will happen where you can see her, or even you both get more time just to talk on the phone, or on skype, or hell even send just dumb snapchat videos. 

You're in love chances are she loves you whole heartedly and cannot wait to see you and be around you again. And love takes work, all love. Just because there's distance doesn't mean it's going to be the hardest ever, you can even have easier luck than couples who share a house, so just remember that one day you can be that happy couple who shares a house or an apartment or whatever and can decorate it and get a cat and be around each other and physically have each other.  

Tomorrow it might be easier, it might not, if it's not easier then you just do things that you can to make your day even slightly better, watch your favorite tv show, talk to her, get your favorite food, hang out with your friends, play a game, and remember that it can and will get better for you.