On each trip to the supermarket, shop for at least two food items that are new to you or your family.

Eat in-season fruits that are high in citrus and bioflavonoids, such as oranges, grapefruit, and tangerines. You need your Vitamin C in the winter! Also, take a multivitamin.

Tackle all household repair jobs before spring. Handle one project per week.

If the roads are clear, take one new route from work each week.

Enroll in a course at your local college, and take advantage of mid-afternoon or evening time slots. Most evening classes are smaller, allowing for more class discussion and individual attention.
 
Take advantage of all the post-holiday bargains. Buy in bulk and buy off-season items when the price is right.

Go ahead and schedule that spa treatment you've been dying to take.

Give your body a treat, go to sleep early at least one night per week.