I don't wanna say "it"

I wanna say "I am tired" ... but ... I am ashamed. Because my students never lost their spirits.
I wanna say "I am bored" ... but ... My students always show their best smile.
I wanna say "I am finish" ... but ... Our process in learning is never ending.

Yeah, I have no reason to say "it".
Because they always do an amazing things and unpredictable.
When I ask them to do the simple thing, they always give an amazing one.
When I feel they will get a difficulties on their duty, hmmm ... they never give up and spiritful.

I can't tell you what has happened today ...
I just proud of them, and ....
Please come to our kingdom, so you will know everything about us ...
Thank you very much