I'll recommend an essential oil to harmonize your being based on what's going on in your life right now, including its properties and instructions on how to apply it. I do not advocate taking essential oils internally or using the same one for lengthy periods of time, unless you've talked to a certified aromatherapy expert.
Training & Qualifications
I'm not a seller or representative of any essential oil brand. I've done a lot of independent research and experimentation with essential oils and own about six or seven books on the subject. I can recommend some brands, but it's up to you to find a quality oil. Sometimes even the good brands can have bad batches.