I don’t think you need that many “thats” in the sentance. I think I know what you mean by fierce, impassioned? focused?

Is it neccessary to say that you already know you possess a certain character trait if you are telling them about it?

I am assuming you intend to demonstrate in the rest of the essay the characteristics…or are you demonstrating these qualities once you are a student?

How about,

I intend to convey my passion for learning, focus and dedication to the field of ____ in my following statement.

Unless you are specifically directing your sentance to the faculty, (is this a given?)

You can say,

I have confidence in my ability to _____(whatever you are going to school for), my passion for learning and ability to focus, (or something like this). In this essay, I intend to convey this to the faculty of _____.

Besides that, the entire meaning is a bit vague. What kinds of characteristics are we talking about, exactly?

“I intend to demonstrate to the faculty my strength of character.” Or something like “I intend to demonstrate to the faculty the characteristics that make me the strongest candidate for this position” or whatever it is.

no need to say that you already know you possess them – that’s obvious from your statement……… and you’re right – fierce is a bit of an ’emotive’ word for this kind of writing.