Great to hear you are getting a good nights rest! Now it is time to experiment with different oils and a diffuser. Start off with Jasmine and Bergamot and use them in your studio while you're painting... I use them often in my office area.
The bath is also a great place to experiment with oils and smells for good stress relief.
Remember when the mozzies keep you up...introduce them to Lavender and they won't stay for a drink.