Ha! I was reading the most recent few pages before I posted two of my favorite Tom Petty songs, Century City and Nightwatchman.A songwriter can learn a lot from studying Tom's stuff.
He never over-wrote anything. He never took it too seriously, but he never phoned it in either.
A lot of the songs are very simple, but there's *always* a hook.
I don't think anyone wrote more memorable bridges than TP (and Mike Campbell, probably, especially in the later years when it was mostly just the two of them).
Take a song like "Nightwatchman." It's sort of a throwaway or filler cut to be honest. No one is going to cite it as a favorite TP song. He probably never played it live after they toured that album.
But it's got not one but two killer guitar hooks, and that bridge elevates it into something that's always worth sticking around for.
TP was rock'n'roll through and through.