Nicholas Said:

I am writing a cover letter and I am using "I" too much! How do I word it so it sounds more professional?

We Answered:

You are right, too much use of "I' , which should be avoided at all costs. I think your letter should read:

I am an enthusiastic team player, who enjoys working with others and is energetic, detail orientated and always tries to excel in everything undertaken.

(You could leave the final paragraph as repetition of "I" once is not serious, but if you would like to avoid repition altogether, you could consider this,)

Two points which are important in my outlook are taking on challenges and learning new skills.