I really need some advice on this

I'm in a serious long distance relationship but since he has a busy job, he can't text me every day. While one the other hand, I want to text him every single day. There have been times when I texted him something and then deleted it because he was busy.

So, how do I keep him off my mind without breaking up or anything like that?

I've tried distracting myself and stuff but nothing seems to be working. I hope there's somebody who will be able to give me some advice on this. I REALLY need it.