glad u're back, beautiful.i've done/felt the same as you before.
referencing the depression...for me the solution was therapy, CBT. it taught me coping skills and tools to assist me balancing my moods. previously i had no coping skills at all. i was at the mercy of my deep depression for years.
i am fortunate that i responded to anti-depressants, too. but i know only meds are certainly not enough. i had to learn how to deal with life in a new way also.
journaling did help me. after i had written down my feelings i could go back and identify the triggers that set off my depression. i was unaware of these triggers til my T showed me. i journal particularly now if i go into a funk.. it's amazing to find the reasons i went down. depression can have cycles too. that's another phenomena i need to be aware of.