When a person is filled with sacred thoughts all his actions will be sacred. His words will also be sacred. Such sacred thoughts are like a sword or a sharp knife. You can use sacred thoughts to search out dark thoughts, dark feelings and dark actions, and cut them to pieces. On the other hand, if you take in food that is not sanctified, dark feelings, dark actions and dark thoughts will flourish. Not only this, but because of unwholesome food you will weaken the body and lose the power of digestion, and suffer all sorts of bodily discomforts.
In the Gita the Lord has emphasized that for worldly prosperity as well as for developing the spiritual potential that is inherent in man, a strong and pure body is essential. For this it is important that only wholesome food be consumed and that it be sanctified by being offered to the Lord before it is eaten.
Thoughts and the thought process constitute the very form of the mind. If thoughts are turned towards the phenomenal world and the things related to it, then these thought processes become concerned with wealth and property, for these are the very basis of life in the phenomenal world. The word wealth usually refers to your worldly possessions and attachments, such as money, houses and land. Another form of wealth is your fame, your position and station in life. But the Gita does not consider either possessions or status as your real wealth. It declares that character is your wealth, good behavior is your wealth, and above all, knowledge of the supreme self is your true wealth.