This is the conclusion of the insightful The Black Belt Myth article written by a karate master Jesse Enkamp.
After just having received my first black belt, I feel the same. I knew I would feel like that.
There will be same mistakes. Same problems. Perhaps more responsibility.
And as always perspiration until your dobok can be twisted to release water.
What is new though is the joy that you are moving ahead no matter how slow you are. As Abraham Lincoln brilliantly put it: “I am a slow walker, but I never walk back”.
Speed doesn’t really matter as long we don’t stop.