sorry..is i hurt u..

Today, my mum was late. I had hot temper with her, because I do not like people to be late.
After I calmed down, my heart was very upset. 
Seems to apologize to her,  but i can't say it. 
Each time, when i in hot temper i just feel that all thing is correct include my behavior.
When I was cool after I found out too late, I have hurt her heart, all this is my fault
Be a child should do not hot temper with our parents, i had learn it.
My heart really is. . feel awful. ...