I am on the verge of a mental Breakdown, I have never been dx with anything, I have only saw a social worker at school who said i have mild depression, but its "normal".

Lately I feel like a complete failure, I am sad all the time, and I feel lost. I dont know what to do anymore. all I want to do is cry. I feel like im going to snap and hurt myself or someone else. I cant take it anymore.