any advice for long distance gay relationships?

So just curious, is there a secret or some way that long distance relationships last over a month?

I am in one now for 4 months and going and I am not sure I can make it. We only Google Chat once or twice a week depending on when he can get access. I trust him but still can't help letting worry and questioning creep into my mind. He is a traveling nurse and I am proud of him and what he does, but not sure how to garner patience to keep this thing going(?) He promises we will be together soon but I just don't see that happening. I am 60 he is 47. Any thoughts or advice are appreciated. ~ Cincioutnow