It is of utmost importance that I shall become a qualified (certified) accountant, which is exactly the goal that I am thriving for.
通顺一点的说法可以是:
I am thriving to be a qualitfied (certified) accountant.
I am thriving to become a CPA (certified public accountant).
It is crutial for me to be a qualified accoutant, and a qualified accountant remains a goal for me.
It is of significant importance for me to be a qualified accountant and my goal is to be a certified public accountant.
This for me to become a qualified accountant is crucial, and this (as aqualified accountant) is my goal.