There are a lot more things you can try. You could look for supplements that might help improve your mood. Examine.com seems like a good resource. Also, consider trying Bulletproof Coffee. A low cost approach might be saying an affirmation to yourself several times as day such as "I will be happy and productive!" You could also do neurofeedback, buy an inversion table, or go paleo. (I'm not a medical doctor.)
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