Writing is far and away my number one suggestion. It's not even a contest.
A well-written developer is someone who can organize their thoughts and then express them in a way that others can understand. This requires mental discipline, clarity of thought, empathy, and intelligence, all of which are skills that will take any developer to new heights.
A well-written developer is someone who can organize their thoughts and then express them in a way that others can understand. This requires mental discipline, clarity of thought, empathy, and intelligence, all of which are skills that will take any developer to new heights.