How did those who divorced after many years of marriage find the strength to live on ?

i’m not divorced but before i was recently married i had a relationship that broke and it broke my heart and i never really moved on from it. the only thing i could do was sever that part of my life from my consciousness try to forget that it even happened which isn’t easy and then i found temporal distance made it somewhat easier. honestly i thought half a decade later it would be easier but i still struggle with it at times.