Here's a way to crystallize the benefits of breathing free—many people who have quit report not only that they breathe better, but they sleep better and have more energy. Many also report less worry about getting sick when living tobacco-free.

Even better, the benefits can extend beyond physical health to an improved sense of emotional well-being.

Looking to find your motivation?

Here are 15 of the most commonly cited reasons to quit.

Here are 15 of the most commonly cited reasons to quit.