I love lavender and find it relaxing too. However I believe that "Essential Oils" is a multilevel marketing venture with no real science behind it, which means you'll be paying way too much for whatever benefit you receive. You can buy lavender oil through the internet for a fraction of what you're paying them, I imagine. My one piece of advice would be a vitamin suggestion. If you aren't taking a good multivitamin with minerals, get one and look into getting some D3 and taking at least 500 mg a day. I started taking D3 last year and it made a HUGE difference in my mood, especially during the winter.
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The question is this: given that God is infinite and that the universe is also infinite, would you like a toasted tea-cake? Talkie the Toaster (Red Dwarf)