Too Much TiVo

I've thought about getting rid of cable since so many shows I watch are online and because I record too many shows and have no self-discipline about adding more shows to record. My TiVo gets full very quickly from all the shows I record and never watch.
In the meantime, I'm going to try not to let my "Recently Deleted" programs get to zero. I hate when shows I want to watch, but don't mark them "Keep Until I Delete" get erased.