Cover letter stressing my prioritization skills

Hello, thanks for reading this post. I would like to stress that I am able to prioritize tasks even when they conflict each other. So I put some examples to support this "theme".I want to know if the paragraph sounds natural in logical sense. Thank you in advance.

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• At XXX, I worked as a financial and administrative intern and successfully dealt with numerous tasks.

In addition to the finance intern position, I also had an administrative job title to maintain office supplies, food stock for canteen and arrange repair services for office maintenance problems.

• To handle multiple tasks simultaneously, I developed a habit of writing a list of things to do and updating them constantly based on the nature of tasks and reminded myself of different tasks’ deadlines. This enabled me to allocate time wisely and start time consuming tasks with sufficient amount of time with more certainty as to my schedule and allowed me to do various things with less stress.

• I believe the skills to prioritize different tasks according to the deadline and importance will help me solve problems easily in executing my duties at [your firm]