"Dear Ann, I am a constant reader of your essential oil books. I have found them to be very useful for a number of conditions we face in our household. My oldest and dearest friend was recently diagnosed with anxiety, which has also resulted in mental fatigue. I have been looking for the perfect essential oil recommendation to give her, and I'm coming up short. Please Help!" Say no more, I am always happy to offer my help whenever called upon. From the sounds of it, I would say your friend should be introduced to Frankincense essential oil. This is one of the oldest, and best known substances on Earth; it was once so highly valued that citizens around the world referred to it as "Liquid Gold." Frankincense has a long history of being used to support the body's immune system when dealing with anxiety and mental fatigue simultaneously. I would suggest introducing her to the warm and invigorating aroma of Frankincense, perhaps with a room diffuser, or even through massage therapy. There are recipes included in this book for a Calming Mood Mist, Calming Rub, and a Meditative Mood Enhancer, all of which can help alleviate symptoms associated with anxiety and depression, as well as the mental fatigue that goes along with it. To Your Continued Wellness, Ann Sullivan