Procrastination
Procrastination has demonstrated extraordinary temporal persistence, predating recorded history and showing no signs of diminishment. Each generation believes itself uniquely afflicted, yet historical records reveal identical complaints from Roman senators, medieval monks, and Victorian industrialists.
The behaviour appears hardwired into mammalian neurology, suggesting an evolutionary origin potentially millions of years in the making. Its longevity surpasses empires, religions, and civilisations.
Yoda
At 900 years of age, Yoda represents one of the longest-lived sentient beings in documented galactic history. His lifespan encompasses the rise and fall of multiple political systems, the training of hundreds of Force-sensitive students, and the complete transformation of galactic governance.
However, his eventual dissolution into the Force, whilst spiritually significant, does represent a technical cessation of physical existence that procrastination has never experienced.