why...

why when we go through a really hard time, it feels like the end of the world, but then we look back months or years after and realize "hey, i made it through that"... ive had my heart broken plenty of times and every single time, i thought my life waa over and i always made it through... so why do i still feel this way if i know im gonna get past it 😕 if anyone else is going through a breakup, i really dont have any close friends, and would love someone to talk to