Alt account because friends know my real one. 

This isn't a regular "I said something or did something I shouldn't have" asshole, this is a "I know I fucked up, how much do I look like an asshole".

I'm currently a student teacher/intern for a school near my college.  Today I was supposed to substitute teach so my mentor teacher could do some work with the other school's teachers.

I set my alarm on my computer and on my phone last night to wake me up early, due to me having trouble waking up sometimes.

However, last night, a breaker in my fuse box flipped off and shut off my computer and stopped charging my phone, which then died during the night.  I woke up at 8:00 A.M (when class started) and rushed to put on clothes and bike to the school.  I got there around 8:05-8:10 and found another substitute teacher talking to my mentor teacher.  Also in the room is my college teacher who is like an overseer of our progress.

I walked in and my mentor teacher and college teacher sat down with me.  They were worried because they couldn't reach me on my phone (still was dead), and I was late, which is never like me.  

I told them what happened, that I was so sorry, and I can still be there and teach.  

My two teachers understood but thought it best for me to go home.  I argued against that, saying I'm here and I can teach, but got told to think about how to not let them happen in the future.   I walked out of the building dejected and know that the whole staff knows that I am unreliable and I messed up.

My mentor teacher and college teacher each texted me and told me not to be too hard on myself and it is okay.  

I have chronic anxiety so my morning has been sitting at home in humiliation that this happened.

Now I am trying to figure out what my next steps are, and how much do I look like an asshole and how to fix it.