When reading documentation, manuals, narratives, instructions, tutorials, and the like, I frequently see phrases like: "If you want to do X, simply ..." and then several steps of instructions. Or, "In order to do Z, just do this, that and the other."
You don't need the words "simply" and "just" in your writing. If the instructions are simple, they will *look* simple. If they are not, using "simply" and "just" indicates that the writer *wants you to think* they are easy. They are marketing words, reflecting the way the author wants you to think about the work, and are not descriptive of the work itself. Eliminate these words (and their various variations) from your writing, and your meaning will be much clearer.