I hate to say this but I worked out for 24 months, when I was depressed with little mental benefit. Once you are medically diagnosis as depressed (where you no longer go to work anymore) that would be fixed by your medication (until you are at least back to your normal life activities). In other words, focus on depression treatment until it is gone for good. I have used Cymbalta for a year or more, it is an excellent medicine.
In regards to your question, the neuro type article might help you a lot so it is a must read few times but until your depression is gone, there is a little benefit. Be patient it goes away eventually.
In regards to neuro type article. I, for example, fit a lot the type 1A (low dopamine with low acetylcholine), and adopted some strategies in my diet and training to get the mental benefit since I do fit this type to great extent. Who wrote this article is very smart, those diets tips work perfectly for me, on the mental aspect: going high protein, keep carbs low or moderate, refeed every few days, large carb dinner for sleep, less glymeic index carbs before workouts, small meals to keep energy up. It is all true if you find your right type.
You are taking an SNRI medicine (I have long experience with that, that’s how I know) that increase both serotonin and epinephrine but do you feel unhappy or unmotivated? If you are unhappy, you could be type 3, if you are unmotivated, you could be type 1.
Remember low serotonin also mean low dopamine, so observe which one you are more sensitive too, to know your real neuro type.
I had low serotonin but it did not affect my happiness while I was depressed, but when I used SNRI medicine for a long while, my dopamine increased over time and I regained some focus and landed on my feet.
My real issue was very low dopamine but it was treated in a reverse manner by increase of serotonin which also happens to make dopamine crash in severe depression, therefore both have to be increased to regain neuro balance.