All I can say is that, for me personally, and many others, being able to eventually move off that chemical dependency has resulted in richer and healthier days. This isn't a judgement on what works for you, or a suggestion that you do some radical change. Just something to chew on in the back of your mind if the day ever comes where you get sick of it all.
A lot of SSRIs have the expected mechanism of action of disrupting your executive function. This is usually explained as making you more likely to act. The other is disrupting the linking and creation of long term memories, especially negative ones. You can find research evaluating SSRIs and antidepressents looking for these things. Maybe it's not bad, but long term memory and good executive function are the main components of IQ.
In the above case the stimulants were originally prescribed I think to counteract a loss of focus, they might be worse off without them.
Personally I lost a year and a half to Lexapro. It made me happy (or made me think I was) but completely removed any motivation I had to do anything. In my observations this is typical, and a concern I expressed to the doctors involved. People I've known turned into shells of themselves who never left the house.
Thumbs up on the exercise though.
Basically, alcohol is uncontroversially terrible for sleep quality.
For example, I myself am about 65 kg and I can easily chug 5-6 pints of beer and be only slightly sleepy the next day.
But I know for sure that my alcohol habits are not sustainable because the next day my stomach (bowels, etc) is having a hurricane. Not sure what would happen if I did this every day (but I did that when I was 22).
If only I were being facetious.
boclinic.org/diseases-conditions/depression/in-depth/ssris/art-20044825