with time u will just focus on something u love doing
Cherish their memories and move on
the human mind is so fascinating that the memory of someone last longer than their physical being it's almost impossible to let your mind earse someone out of it. what I would suggest is think why you want to repress that person or the thought of that person and think whether holding it back or embracing it will let you have closure.
acceptance is the only key.. don't fight with memories just be normal with them slowly slowly you will get used of living without someone.... trying to love Or trying to forget both case brain behavior is same...