Drawing a Straight Line Without a Straightedge

A designer once said:

"You make a point where you want the line to end, then go to where you want the line to start and draw toward that point, never looking at where you actually are drawing, just keeping your eye on the point in the distance."

Well, I tried it, and I can't say I drew a perfectly straight line. But it was better than my usual efforts without use of a ruler."

I think I will apply this principle to my life.