Question is a little vague. I could go any number of ways for giving a few tips. Could you be more specific? Aches? Boredom? Fatigue? Fidgety? Cold?
I'll start with this...
I'd suggest getting a comfortable seat cushion and don't be stingy with the wallet either. If you are not comfortable sitting, you will move around more always trying to re-adjust or work the soreness out. I bought a Hunt Comfort seat cushion and it's awesome! Gander Mtn has them for $60 and other retail/online outfits have them too. I thought at first it was a little high, but now I don't have any regrets. In fact, yes I do...
I wish I would have bought it sooner!
Good luck,
iSnipe