I feel like this is on the tip of my tongue. What is the adjective for describing something as composing of a single part? e.g. "Your goals need not be [composed of a single part]."
Some possibilities that don't particularly ring true for me:
Homogeneous: I get the sense that "homogeneous" describes the qualia of a mixture, but the context I'm using it is not describing a mixture.
Monolith: This word's connotation seems to be more about the size of the object, not the composition of it.
Simple: This is the mathematical word for what I'm looking to describe, but this is a pretty technical and overloaded word that doesn't suit a layman audience, so I'm not inclined to use it.