The long and short legs are the length and length of the human body, which is quite common and annoying. It is also very annoying to have long and short feet in a dream.
Dreaming that you have become long and short, it means that you have some problems in the progress of your work. It may be that you are worried about not keeping up with the progress. It may also be that the progress is too advanced to let other colleagues catch up, and cause troubles in your heart.