Writer's Block to Some Degree

I never have a problem coming up with ideas for songs (instrumental), but they never fit together. If I think of a beautiful sounding verse, I can't think of a chorus for it. Or I can think of a good bridge, but no verse sounds good with it. My songs follow a simple chord progression (or in some cases a complex one) and they don't stray from that progression, lending to a somewhat repetitive sound. Any ideas on how to come up with different sections, while retaining the sound of the song?

How about this song, for example... Am, E/G#, G, D/F#, F, E is the progression. I have two sections of the song, which is more than I can get on most songs, but I still want more... maybe like a change in the progression.

Section A
|------------|------12----|------------|
|------13-15-|---------12-|------10-12-|
|------------|------------|------------|
|---14-------|---14-------|---12-------|
|12----------|11----------|10----------|
|------------|------------|------------|

|------10----|------------|------797---|
|---------10-|------8--10-|----------9-|
|------------|------------|------------|
|---12-------|---10-------|---9--------|
|9-----------|8-----------|7-----------|
|------------|------------|------------|

Section B
|17-------17-|16-------16-|15-------15-|
|---17-------|---17-------|---15-------|
|------17----|------16----|------16----|
|------------|------------|------------|
|------------|------------|------------|
|------------|------------|------------|

|14-------14-|13-------13-|12-----12/19|
|---15-------|---13-------|---12-------|
|------14----|------14----|------13----|
|------------|------------|------------|
|------------|------------|------------|
|------------|------------|------------|


Copyright Jared Wilson, 2002. Please no stealing!!

Feel free to comment on song, or give ideas/suggestions... if the tab doesn't line up, copy + paste into NotePad