Here are some previous TB threads you may want to take a look at:
~Getting creative
http://www.talkbass.com/forum/showthread.php?t=511516 Where does creativity come from?
http://www.talkbass.com/forum/showthread.php?p=80043 1 Creating bass lines
http://www.talkbass.com/forum/showthread.php?t=125536 2 - Target Approach
http://www.talkbass.com/forum/showthread.php?p=6770334 3 - For a jam
http://www.talkbass.com/forum/showthread.php?t=506691 Playing scales
http://www.talkbass.com/forum/showthread.php?t=491679 Playing behind/ahead of the beat
http://www.talkbass.com/forum/showthread.php?t=500896 "Feel"
If you check out the links in my sig. below, there may be some more info that may apply to your situation.
~Getting creative
http://www.talkbass.com/forum/showthread.php?t=511516 Where does creativity come from?
http://www.talkbass.com/forum/showthread.php?p=80043 1 Creating bass lines
http://www.talkbass.com/forum/showthread.php?t=125536 2 - Target Approach
http://www.talkbass.com/forum/showthread.php?p=6770334 3 - For a jam
http://www.talkbass.com/forum/showthread.php?t=506691 Playing scales
http://www.talkbass.com/forum/showthread.php?t=491679 Playing behind/ahead of the beat
http://www.talkbass.com/forum/showthread.php?t=500896 "Feel"
If you check out the links in my sig. below, there may be some more info that may apply to your situation.