How do I maintain my integrity when workplace pressure conflicts with my principles?

This is the core question. People make small compromises. A convenient shortcut, a misleading word to a client, silence when they should speak up. Each one feels survivable on its own. But integrity doesn't split into parts. You can't be honest in one area and calculating in another. The muscle weakens everywhere. When the pressure comes, and it will, you have to already know what you won't do. Not as a rigid rule, but as a line you drew before you got cornered. The practical part is to speak early. If you sense a direction that troubles you, flag it before it's too late. Most problems are easier to prevent than to fight. And yes, sometimes holding your line costs you. A promotion that doesn't come, a client you lose, a coworker's resentment. Those are the real prices. But the other cost, looking in the mirror and not knowing yourself, is higher. Doing the right thing, over time, builds a reputation and a peace that nothing else can.