When you've worked twenty five years in continuous improvement, you'll get to the end of that time and realize that you've got another twenty years to go, says Mark Fendley, a Master Black Belt at car manufacturer BMW. In this Profit Through Process What I Wish I'd Known interview, Fendley describes the importance of patience for C.I. professionals and explains why something he calls the "Aha" moment is his favorite part of the job.