Struggling - need somewhere to vent

I am really struggling recently with my mental health, just always wanna cry and feel like breaking down, sick of feeling never good enough, like everyone is against me, sick of being me! Sick of being spoken to like shit at work, (support worker) Try my hardest and yet feel like no one wants me here, so tired of life and everything about it, tired of getting emotional over the tiniest thing! Always so stressed and emotional... just wish something would help