Are you referring to seasonal depression, being depressed because of current weather, or being depressed because of what you see in the media? I can't quite tell from the title.
Some sanity checks:
* What is the expected increase of the sea level in 2100 compared to 2022?
* What is the usual difference between the high tide and the low tide in you city? (Or the nearest city with sea, or you favorite vacation beach)
Also, remember that a lot of things will change before 2100. It's difficult to guess, but we can compare with the world 80 years ago. No transistors, only a few huge low capacity computers with vacuum tubes. Only wire phone. No nuclear, solar or wind electricity generators.
I grew up reading about a new ice age and acid rain rendering entire cities uninhabitable yet we’re still here.
Go back and look at past climate change predictions and see how wrong just about everything you’re told is.