How do I keep scoping consulting projects that stay profitable?

You have learned to scope tightly, price fairly, and deliver what you promised. That is a discipline many good consultants never reach, because it asks you to hold your ground in the very moment a client is pushing for more. Give yourself credit for the boundaries you have learned to keep. The test now is comfort. When the work is going well and the client is happy, it gets tempting to loosen the scope, to throw in extras, to stop writing down the edges. That generosity feels good and quietly erodes the very structure that made you profitable. So keep your discipline even when nothing is forcing it. Before each new engagement, put the scope and its limits in writing as carefully as you did when you were hungry. Treat your own boundaries as worth honoring. That steadiness, held in good times, is what keeps the good times going.