“ Jagadguru Sri Adi Shankaracharya points out thinking about the Lord is a must. One who spends his or her life without the thought of God is devoid of discrimination and is not wise.
The Acharya points out:

One Muhurta consists of 48 minutes. The Acharya says that even if one such Muhurta period of 48 minutes is lost without the thought of the Lord, we have to feel sorry. How? What we see in our experience is given as an example in the verse. One might have acquired and stored a lot of materia… http://bit.ly/bPSoRa