According to Dictionary.com, a Challenge is:
difficulty in a job or undertaking that is stimulating to one engaged in it.
You're stretching those little used muscles and trying something new.
If it works, then
If not, at least you tried. I recommend that instead of saying you can't do something, you try. (Really, attempting not to break out in Yoda voice here.) And the rest of us know, Queenie, that if you put your mind to it, you will succeed, and the rest of us will read it. I have faith in you, even if you're feeling a bit Bizarro lately.