Preach on sister. You're 100% right. Depression is a crafty beast in convincing you that life sucks, has always sucked, and will never get any better. I was actually an IFBB professional bodybuilder and at my worst I couldn't convince myself that I was strong enough to put my socks on at one point. Luckily those days are over and I won't fall prey to that shit again.
In any case, if I'm reading you correctly it sounds like you managed your way through it so I'm super proud of you. Lord knows it's a demon to try and deal with.