1. A method for automatic adjustment of at least one of several working units of a self-propelled harvesting machine involved in a harvesting process, comprising the steps of: Initially modeling the harvesting process by at least one program map, based on a data base characteristic of a current harvesting process; Determining an initial working point of the at least one of the working units on a basis of the initial modeling; Adapting the at least one program map on a basis of data currently collected by measurements and which influence the harvesting process; Determining a new working point of the at least one working unit depending on the adaptation of the program map; and Iteratively approximating the new working point.