My Cosmic Autumn Rebellion (The Inner Life as Blazing Shield of Defiance and Optimism as Celestial Spear of Action)

Adding on to what Hybrination said and ignoring everyone else (because I'm lazy), I also think that it has to do with sticking around and being loyal- toughing out the harsh times. It's about a person who has refused to be a fair-weather friend...or rather, fair-weather bird, as it be.