I would certainly start with the soda. I just think soda is, in a word, nasty. I don't mind a root beer, ginger ale, or cream soda every once in a while, but I have never really had a taste for pop, diet or otherwise.
But I do keep tripping up over how fatigued you are. I assume your bloodwork included thyroid and anemia tests....
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher