Choking and by yourself while no one is around to help you? You can do the heimlich maneuver to yourself by using a pointy object. Simply locate the same area of the body you perform the normal heimlich maneuver to another person and push / thrust yourself against the pointy part of an object (such as the corner of a table or chair) until the object comes out.
I had to do this several years ago and it worked for me, know this article is a suggestion based on my own experience and not suggested as medical advice. Please join us for a class to properly learn how to do this in person.