Dreaming of blinking means resetting progress to the starting point. Your biggest fear is starting over again. However, this is not necessarily the case because if you were climbing a set of stairs to the tenth floor and fall down one flight on the ninth floor, you will end up on the eighth floor to start from there. Do not fear if someone tells you that you will start all over again because it is simply not true.
Whatever progress you made, you will keep as no one is capable of taking that away from you.
Blinking in a dream is also an indication of fear for the darkness and the unknown.