That conference organizer used to be a travel agent.
This company used to make playing cards.
Perhaps you used to be hooked on keeping score, or used to be totally focused on avoiding the feeling of risk, or used to be the kind of person who needed to be picked...
"Used to be," is not necessarily a mark of failure or even obsolescence. It's more often a sign of bravery and progress.
If you were brave enough to leap, who would you choose to 'used to be'?