Halt (someone or something) (dead) in its/(one's) tracks verb phrase
The verb "halt" can be replaced by "stop."
To suddenly stop moving as a result of shock or fear.
I halted dead in my tracks when I saw him pulled out a gun.
The loud noise made Jennie terrified and halted her dead in her tracks.
To be astonished by the occurrence of sudden situations
To be hit violently, especially on the head
The verb "halt" should be conjugated according to its tense.
To keep optimistic or have hope that something positive will occur and simultaneously prepare for a negative outcome
All I can do is hoping for the best and preparing for the worst.