What do YOU need to do to have a major swimming breakthrough?"

One topic of great interest to us all is "What do you need to do to have a major swimming breakthrough?" "What do you need to do to significantly improve your swimming times over one season?" Do you have any specific, nitty gritty type suggestions. I think it's really easy to fall into ruts, to just show up and go through the motions rather than seizing the moment while we train. Any one have any thoughts on what we need to do to significantly improve? forums.usms.org/showthread.php