Seventy or eighty. But that's because I never officially abandon a story, so every single one I've ever started is still technically in progress (and I've been writing since I was in grade school).
In practice, however, I'll usually work on one for a while, maybe a couple of weeks up to a couple of months, then get bored with it and move on to something else for a change of pace. It's not uncommon for me to come back to a story after 5 years and work on it again, which is why I can't really say I've moved past any of my stories.
|