I made a mistake and I don't want to start hating myself

Or start crying.

I needed a licenses from my principal to travel two days from the next week, "I need your support", I said, he said he was "going to see because there's some other licenses (? is this correct?) that day", I said: "But see also that I have never asked any license", "bad luck" he said.

I said all of that with a sad face, and I hate it, everytime I see anything that I think it's unfair I put a sad face, I don't even get angry. I need more assertiveness , and self esteem.

Maybe I should have said " I have a comission from my other job" (because it's from my other job), but I didn't and now I'm repeting myself that I should have, but the paper didn't say "comission" it said "to ask you your support ..." anyways, I'm going to see him in two hours and I don't want to cry if he says no and I don't want to stay quiet. But I dont know what to say. I hate it.

That's right, S.C.

And that's exactly what happens. Everytime I ask something for my other job (and in three years I have asked something like two times) there's always a storm. One time he even told me : "Yes, but this is more important".

And I couldn't see him. I went to the time he asked me and he was not in his office, and the prefect (I don't know if it's clear, it's a person who checks the students out of the classtoom, recess or those things) said he had already left, but he hadn't! Like two hours later, somebody told me that he was in his office and he had just left. So I couldn't see him

I will see him until Tuesday.