Since we take (too many) trees down to make paper, it makes sense to become more aware of the amount of paper we use and be diligent about it. Let's try to reduce its use, save it, reuse it or at least recycle it. Paper can be recycled multiple times before it becomes unfit for another cycle.
Reading your paper online, your books on an e-device, and sending emails and e-cards (and who writes paper thank-you cards anymore?) helps to reduce the amount of paper that needs to be manufactured. Although tedious, unsubscribing from catalogs you don't want is an important action. I save and reuse paper gift bags if they are in good condition. And in general, I am a dedicated, bordering on obsessive, recycler of all household paper and cardboard, such as cereal and other cardboard packaging, newspapers and magazines, Amazon shipping boxes (if I can't reuse them for sending out something else), envelopes, toilet paper and paper towel rolls (if I find them in the garbage I will take them out).
Since I get me eggs from friends or local farms I always bring the egg cartons back for reuse. Books you no longer want can be donated to your local library, or be given to friends who have not read them.
In my home office I make double-sided copies or print-outs, or print on back pages (the kids generate tons of one-sided school related paper I print on). I also use shredded paper as packing material instead of the terribly environmentally unfriendly styrofoam peanuts or bubble wrap (I shred everything with a name and address on it, which makes for quite a bit of packing material).
If you do need to buy paper and paper goods, and we can't get around basics such as toilet paper and paper towels, paper napkins for the occasional party, or copy paper, consider buying products made from 100% recycled paper. But even I have my limits - I don't buy tissues made from recycled paper because I find them scratchy.