A BNSF Z train with 4 4400HP GE Gevos and 10,000 tons on the draw bar pulls with all their might to keep the train moving. And not only moving but at the 70MPH track speed in the middle of the Mojave desert. Or to start at a dead stop on a 2 percent grade.
All I can think of when down, is to be like a train, or a dragon, or a wolf. No matter how hard life pulls at you, pull harder, overcome, and keep moving.