Dream about not speaking draws attention to suppressing your own needs or feelings. You are keeping some secret or withholding some information. You have a very low opinion of yourself or of someone in your life. It draws attention to the introspective aspect of yourself. You need to act out your wishes.
Not speaking dream points at your competitive spirit and how you tend to measure yourself against others. Perhaps there is a situation or problem that you need to overcome or take control of. You are trying to understand a person on some level. This dream denotes fear of the unexpected and unknown. You are shutting someone or something out of your life.
If you dreamt about not speaking:
Try not to let a negative attitude creep into your work. You may be annoyed at the slow pace with which things are moving for you, but don’t worry. Good things take time. Reaching your career goals is a long process, not an overnight accomplishment.