On occasion, I've gotten some mileage out of visualizing myself doing the task easily, painlessly, visualizing feeling energy for it. It's sort of a mental rehearsal, which though sounding dumb and simplistic perhaps, has actually worked for me. Even to get out of the house for a social invite or activity, I've had to visualize myself having momentum, easily slipping on my coat, keeping moving, grabbing my car keys from the hook and walking out the door.