The most effective people I've met all maintain a gigantic locus of control and bias towards internalizing blame. Whenever something doesn't go their way, they deeply analyze the circumstances to identify what they should have done differently, or, even if they acted appropriately based on all the information available, how could they have gotten more information or taken intermediate actions to extract more signal to inform later bigger actions. They don't dwell or make excuses. They just learn and apply that learning to the future so they don't make the same mistake twice.