Please share your techniques to memorize. I memorize, i forget
I forget things all the time, and many of them I regret afterwards (e.g., because they were some good ideas, papers, blog posts, code, whatever). Three things come to mind: old-fashioned README files within directories you are working on (whatever you are working on); having local git repositories and committing frequently (i.e., also beyond code); and, for some things, old-school pen and a notebook.