JK3 - "go it alone" is Jack White killing it. Evidence of his genius, right there, look no further. He's a sick bassist, y'all! Trust me. Great musician and instinct, for sure. And a sweet, sweet guy. Brought my band Ima Robot on a US tour, gave us a real boost during our first record.
Interesting, there's some songs where people think it's me, but it's not, and I get quite jealous because in fact there are many occasions in which other musicians can and will, due to who knows what random factors, come up with something so identifiable. Sometimes, I'm sure you'd agree, my lines aren't actually all that exciting; they can be quite supportive and good, but definitely transparent and light on the real personality.
Then there's other times when I beat my chest and think about how memorable a certain line or approach seems to be, because it just felt so right for the occasion and it feels like such a statement in some regard.
I'm sure most bass players would agree that they all go through these two extremes to some extent. I wouldn't call it insecurity, I would just say we can't all be Paul McCartney or James Jamerson all the time...or Peter Hook or Paul Simonon or Jack White, for that matter!!
Living, learning, growing and enjoying the ride,
JMJ