Mood is a powerful word. It actually comes from older words that mean spirit, mind, to strive, be energetic, and courage. It is also being referred to as customary behavior or custom. Thus, mood means way more than being happy or being sad. Moods encompass much from what you need in order to live. Spirit, mind, to strive, be energetic, and courage – are all related to moods and your sense of well being.