If we trust the source of the criticism, we're more likely to take it well. Most of the time, what we're up against isn't someone else's opinion but our own, reactive defensiveness. Slowing down that reaction and hearing before feeling can make us better at processing criticism.
Every one of us deals with negative feedback in our lives - at work, at home, in our relationships. Does being criticized help you find ways to improve or does it send you into a spiral of self-doubt?
Systems aren't about living in a rigid box, they are really about freeing us from trying to make it up as we go. What can we automate in our lives? What can we take out of the realm of burden and into some kind of system that fits how we live?
We all know that you can be 100% solid in one part of your life, and a total mess in another. If you want a new result, you'll need a new system. Systems work for sleeping, eating, working out, time management, keeping the house clean, and keeping your finances in order.