Your best work will be created when you have mastered your own particular style and the technical / photographic nuances that make the images you create so special.
I think I reached this point, in 35mm, around 12 years ago, when I was ... let me see ... 52 minus 12 equals... 40! Yes! With the 6x7 format, the best images came about a year after I migrated to it, and they are still coming. That would be... hmmm, 52 minus two = ... 50! So around my 50th birthday things got quite thrilling staring watery-eyed at glowing Velvia trannies on the lightbox. Oh... I still live for that moment when the best works, often requiring the best of efforts and best of planning, come to life with the flick of a switch.