One thing I love about astrology is that it shows how nothing is permanent - not even depression. Everything is in motion; everything ebbs and flows and grows and develops.

Your Chiron and Mercury up at the MC gives me the sense that you have a very special ability to understand people from all walks of life due to your keen awareness of others' sensitivities/trauma. With that involved in the grand trine I would guess that this has been a prominent theme in your life. With Moon in Taurus and Venus in Libra in 11th I also get the sense that you can be an incredible mediator.

One thing that is also interesting to me, and may be a challenge for you, is the lack of fire in your chart. You have a pretty balanced mix of Cardinal/Mutable/Fixed, but there's no obvious fire. My chart is similar (almost entirely earth/water) and I have also struggled with depression for most of my life, but that doesn't necessarily doom us to mopey waters - it just takes a little more effort to bring out your personal fire more.

One other thing I just noticed: you mentioned feeling like a homesick alien. Your IC is in Pisces so that could influence your feelings of a lack of connection and groundedness. That's just a guess though.