Hi, it was a long time ago, but i did a search for you and found an article. Unfortunately, it's in dutch, but maybe you can translate it. I'm sorry, this topic is not my expertise, but i did find it quite interesting. And a bit disheartening, because this info is crucial for people who plant forests, but not for the casual gardener.
As far as looking for resources, that's a very kind offer, but my garden is filled to the brim! It's not big, but very wild and i tried to plant some native shrubs that i felt were most beneficial for both insects and birds. (And since literally all birds skip the paved gardens in our neighborhood and flock to our garden to sing, to feed, to mate, to rest and to breed, i would say that we are doing something right :-)
Maybe, as a crooked comparison, it's a bit like drinking way too much coffee; you feel energetic, but maybe also jittery, and happiness doesn't really have anything to do with it.
As for antidepressants; after decades of two kinds of severe depressions, i learned to meditate and haven't been depressed in over a decade. It changed the way i view the world in a fundamental way and i learned to not focus on the depressed feelings (focusing on them would make it more intense). So, i don't use any medication for it anymore.
Thanks for your kind words and have a great day