When you read about essential oils, it will seem that they all purport to give you some kind of lift. Some are known as calming (they can lift you from your stress) and others exciting—they will lift your mood. In some ways, the oils that life your spirits are highly individual, because we all have different associations with various scents. If your dad wore Old Spice and the scent makes you recall him lifting you up and whirling you around when he came home from work, that smell is linked very closely in your brain with a happy memory. If your dad wore Old Spice and you associate the smell with him yelling at you for not cleaning your room, the smell won't trigger happy feelings because it's associated with an unpleasant memory. If you find that a particular essential oil brings back unhappy memories or creates a bad feeling, discard it in favor of one that has no unhappy associations.