How do I handle complex safety-critical PLC logic?

You can program most systems now, and that's real. But safety-critical logic is a different weight, because a mistake doesn't just crash a program, it can hurt someone. That's why it still defeats you: the stakes make you second-guess, and the complexity leaves no room for the almost-right. Feeling the gravity of it is exactly correct. The way through isn't cleverness. It's discipline. Safety-critical work is built on redundancy, clear logic, and the humility to assume you've made a mistake and hunt for it. The best people in this field aren't the fastest coders. They're the most careful, the ones who plan the logic fully before writing it and who test as if lives depend on it, because they do. Slow down where it counts. For the next safety-critical piece, map the full logic on paper before you touch the code, and walk it through every failure case you can imagine. Then have someone else check it. The complexity doesn't beat the people who respect it enough to be methodical. Let care, not speed, be the skill you build here.