What runs around the whole yard without moving?

I come in every form you name, yet I am nothing you can hold. I shape the world with unspoken power, and vanish the moment you notice me. Some seek me in loud engines, others in quiet inks. When I stand alone, I mirror your thoughts.

I can make you run, I can put you to sleep. I dictate your life I change every second . I follow your life. Stop me and I will never forget that time, you will loop back to that moment everyday, I will remain as a reminder to you of what you have done

Up and down, top and side. Not big but small, rolling right along

I come in all shapes and sizes. A gun, a sword, a spear. I turn all men to children if my form is unique. Some people prefer me over automatic.