My children both live miles away, too. I did see my daughter at the weekend, which was lovely, but it will be a while before I see her again, and probably Christmas before I see my son.
I do miss them both; but we have set up a family WhatsApp group, which makes it easier. My daughter is better at sending messages and photos than my son, but it does allow us to spend virtual time together, eg when the last Eurovision was on, we 'watched it' together, like we did when they were at home. My husband wasn't interested in that, but he joins in other things.
It's not the same as having them near, but it's better than not seeing them, and it does mean that we keep in touch.
I agree with Daisymae, that finding things to do that you enjoy is a good idea. As she says, you will have more to talk about, and you might find that you don't miss them so much when you are occupied with other things.
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