i always try my best to make others happy, but what about me? what about my happiness?

its always "there's nothing wrong with her" when I'm sad and can't explain why

my mouth won't let me say how my thoughts keep me up all night, or how I sometimes get so overwhelmed that I don't want to do anything anymore, or how sometimes I just want to be alone

i always check up on people, but what about me? what about my feelings?