Each thing tends to move towards its own nature. I always desire happiness which is my true nature. My nature is never a burden to me. Happiness is never a burden to me, whilst sorrow is.
Knowing that I am different from the body, I need not neglect the body. It is a vehicle that I use to transact with the world. It is the temple which houses the Pure Self within.
You never identify yourself with the shadows cast by your body, or with its reflection, or with the body you see in a dream or in your imagination. Therefore you should not identify yourself with this living body either.