How do I keep charging what my work is really worth?

You have arrived at something many never reach. You price your work to its value, you hold your rates, and you get paid on your terms. That is not luck. That is years of learning to see your own worth clearly. The danger now is quiet drift. Comfort can soften your resolve, or a lean month can tempt you back into old habits of shrinking. Guard what you built. The discipline that got you here is the same discipline that keeps you here. Keep a simple record of the work you are proud of and what it earned you. When doubt creeps in, read it. You are not being greedy. You are being fair to yourself, and that fairness is what lets you keep doing work worth paying for.