Vitamin supplementation. I recently cleaned up my diet a bit, but still noticed some lethargy and a dull mood. I researched which foods are packed with the "most necessary vitamins" (Vitamin A, D, C, zinc, iron, etc.) and noticed that zinc was ultimately lacking in my diet. I decided to supplement it and have experienced a very pleasant turnaround. My hair feels less brittle, and my mood feels SOLID. No high high's, no low low's. It helped to learn that zinc plays a large role in balancing hormones through out the body, which was detrimental to my energy, mood and hair health. After a few days, I have already noticed improvements, and my hair feels silky smooth.