I'm in this mood where i hate/ love life help

Sometimes I get into these moods where I see everything going wrong; not just in my life, but in others and the world itself and think of how utterly of a disaster it is but also not want to leave this place and enjoy the small things.

Yes we wouldn't know what good is if we didn't have bad but I feel like we should have learned from our past mistakes and make life better.

I'm not really sure what I'm trying to say but can someone please agree with me so I'm normal? thanks.