One thing that I am cautious about is the biological guarantee that you will develop tolerance to the drug and will need ever more powerful drugs throughout your life to maintain the baseline of "ok".
I'm glad the medication helps, but it seems like exercise and diet (and other activities) are more sustainable in the long run even if they are not as dramatically effective.
Maybe it makes more sense to take medication on a short term basis to deal with crisis and focus on lifestyle changes for long term success.