Because it's spring. Because it was such a long winter - especially for those of us in the productive latitudes - and because it's always a good time to get your hands dirty, it's time to plant something.
It's the right of the season, and really, it's what makes us human. Ever seen an animal grow something?
Even if you live in an apartment the right, and the ability, is yours. You've got the water. Your trowel is a teaspoon. Get some dirt. Get a plant. And just sink your fingers in there.
My local plant shop is Saffron in Fort Greene and I really can't recommend them enough. If you live nearby, or even if you don't, check them out. They've got a great supply of succulents and also unique cut flowers.
If you reside on the island off of America known as Manhattan, check out Green Fingers in the East Village. It's the U.S. outpost of Satoshi Kawamoto's Japanese greenery empire (The NYC shop is the fifth location). They're expanding to include a cool backyard patio as well.
But really, just go anywhere. Get some plants. Water them. Watch them grow and join the human race. It will make your life better.