I'm not sure if taste in music would determine if a person is strong minded or not... I know taste in music has more to do with personal preference...
As far as state of mind goes, does it count if a person actually prefer solitary life? I'm more of a loner than anything else & I do enjoy alone time, perhaps more than others... I'm not sure in itself says I'm a strong minded person... I've been through my share of some tough time in my life... Life is what it is... There are aspects of it that we can't change... World will go on with or without me in it... If I were to die this very moment, in a grand scheme of things, it doesn't really change all that much... Bus schedule won't change, trash will still be picked up, businesses will still open tomorrow, etc, etc... I've accepted that... All I can do is try to make the best of what I have & what's going on around me... How's that serenity prayer go? "God, grant me the serenity to accept the things I cannot change, The courage to change the things I can, And the wisdom to know the difference." I'm not particularly a religious person but I think it makes a lotta sense...