If you need to get away from checking things off your to-do list, find a shady patch to sit at Lake Gardner. Bring some nibbles and a good book ... Whatever helps you relax!
When you've finished up at this body of water in New Hampshire, why not make your way to Haverhill-Bath Covered Bridge, Wild Ammonoosuc River, and Swiftwater Covered Bridge? They're near Lake Gardner and also a hit with travelers.