Starting with a description of the features of a system as a given entity it is shown that an adapting or self-organizing system undergoes transformations that can be extended to formally explain self-generation. This process depends on the interplay between structurally determined constraints and relationally enabled decisions which a “self”-like representation of the system can use to realize itself and thus to constructively build up transitions of states with ever increasing complexities. The need of a certain a priori framework for those considerations is outlined.