I also think your cover letter is good!

For essay 3 I really liked your introduction and maybe you could be a little more specific in yo ur thesis! (like what way did it help you view the world?) I think your essay is pretty good and I think you could also add how like friendships would help you with co workers and you new aspect of life helps with having a positive out look when it comes to the future and new jobs.

I really enjoyed reading your first essay and I like that you included personal experiences and mentioned all of the resources well. I would say to just make sure to check for some spelling errors!