how do i fix my sleep schedule ?

my friend is mad at me for my sleep schedule , im always asleep at day and awake at night. 

i have no idea how to fix it and i feel like a bad friend for this - ive had struggles with sleeping and what i do in the spare time i have , its draining just even thinking about it. ive always wondered why we need to sleep and why its important for us. its all just weird to me.

i understand we as humans need it - we need to recharge our body and regain our energy so we can continue living and going on with our days , at night im always surrounded by noise but at day its always quiet. the noise gives me paranoia and it scares me.

but during the day it feels so uncanny that i just think to myself "i need to sleep." but that doesnt work , because if it did i wouldnt have my problems come back to me in a loop. it wouldnt stay the same.

so what do i do ?