@swimmergirl415,
A few quick things off the top of my head. Place an empty line between paragraphs. It makes it all a lot more readable. When you don't indent, you've really got to do this.
Your verb tenses sometimes are confusing (e. g.
the coach had then pulled me aside - skip the
had). You have some redundancy (there's a sentence where you say
alone twice. Once is sufficient; we get it).
Also, I realize from your user id that you have a swimming background. However, the chances exist that the person reading your application essay won't be seeing any other part of your application. Hence they won't know! You need to tell them. So begin by setting the scene, something like
It was the first swim meet where I was in charge ....
Why is it such a big deal to not miss any races? You tell us but it's not that convincing. Does it mean something like your team had a chance to win every race, or that it was a team that had missed a lot of races before and now they had become a disciplined unit? Was it some rule that you needed to follow in order to get some other perk? Maybe talk a bit about that. Telling me it felt good is nice, but giving
me a reason to feel good about it is even better.
Best of luck to you!