I give up. I am so un-happy and need to change.

I hate who I am.
I hate that I'm so aggressive and fiery, and now because of it I might lose my job. I'm dealing with the work situation alone because my parents have bailed me out enough.
I'm scared I'm not going to get to Uni in a few months. I work so hard, and especially in the most recent exams, and I was disappointed in my grades.
I just feel like where ever I go I do things wrong and I upset people, get people's backs up, annoy them, and am generally an awful person to be around.
I know that we should never change for anyone, but I really need to. I feel like such an awful person. When I try to not be, I always end up putting my foot in it anyway, and now I might lose my job. I don't even mean to be aggressive. It just happens. I do try and contain it, and my form tutor said to me today "you have got better,instead of counting to one...now you count to two...we just need to get you to count to ten.."
I dunno how I will tell my parents that I lost my job if it happens.
I reallt don't know what to do...Please help.
I hate that I'm so aggressive and fiery, and now because of it I might lose my job. I'm dealing with the work situation alone because my parents have bailed me out enough.
I'm scared I'm not going to get to Uni in a few months. I work so hard, and especially in the most recent exams, and I was disappointed in my grades.
I just feel like where ever I go I do things wrong and I upset people, get people's backs up, annoy them, and am generally an awful person to be around.
I know that we should never change for anyone, but I really need to. I feel like such an awful person. When I try to not be, I always end up putting my foot in it anyway, and now I might lose my job. I don't even mean to be aggressive. It just happens. I do try and contain it, and my form tutor said to me today "you have got better,instead of counting to one...now you count to two...we just need to get you to count to ten.."
I dunno how I will tell my parents that I lost my job if it happens.
I reallt don't know what to do...Please help.