Dreaming of Halloween means you want to let out your true self because conformity is holding you back. Wearing a mask helps to bring out your uninhibited self allowing you to exceed in pursuing your passions instead of working to collect a weekly paycheck.
More important is the character you dress up as during Halloween because this is your true form other than the current acceptable, corporate, and normal daily inhibited self image.
Another interpretation is that Halloween in a dream represents a time to confront and overcome your fears. Halloween is often associated with spooky and scary themes, so this dream might suggest that you’re facing some fear or anxiety in your waking life. This dream could be telling you to confront and overcome your fears, and to not let them hold you back.
Another possible interpretation is that Halloween in a dream represents a time of self-expression and self-discovery. Costumes, masks and disguise are used during Halloween to allow people to express themselves in a different way and to discover new aspects of themselves. This dream might be telling you to explore your own identity and to express yourself in new ways.