existential angst

restlessness anxiety

madness

brokenness

can't find the source

il sorgente di gioia

where has my heart gone

an uneven trade for the real world

eyyyyyyyyyyy hello

how you doin?

il sorgente di gioia

it's ``la sorgente della gioia''

sorgente is a feminine noun, as is gioia, so you need to use the feminine version of the article 'di' in this type of sentence.