Editing tweets isn't hard, but it's not obvious that people can do so without Twitter's knowledge. To edit tweets, write them first in a document or spreadsheet, then review and revise as needed, considering whether they promote positivity and engagement. Unfortunately, you cannot edit tweets after publishing, unless deleting is an option, due to the potential for abuse of an edit feature. However, using scheduling tools like Buffer can allow you to think about your tweets before publishing them, giving you time to reflect and make changes if desired.