Academic and career plans.

Im applying to Indiana University Bloomington and have to complete their writing supplement. Its about academic and career plans and any special interests to pursue at the university, for example – undergraduate research, academic interests, leadership opportunities, etc. And also I have to write about any challenges/obstacles I have encountered in pursuit of my education and how I overcame them.
As you can see in the file I uploaded on the file page, there was an introduction about my current job and I dont if its better to keep it. All I care about is the requirements of this writing supplement that have to be fully completed.
Academic and career plan: at this part you can add more details.
Interests to pursue at Indiana university: I just wrote one in general with no details. I think the question has no detailed information on what interests exactly I can pursue as an undergraduate student at their university. You can look it up for me, see what interests related to Economics that are offered by the university.
Challenges and obstacles: I want to add more details here.
Here are some ideas to write:
At the early stages of education, it wasnt that essay to me to understand Math. Despite all challenges I managed to advance my skills and keep excellent scores in Math. Math was one of my favorite subjects that has a good impacts in performing well in other subjects.
Also, you can write about challenges I had while studying English abroad in Canada. As a first time living away from home, it wasnt easy to get used to at the begging, but I started later to be familiar to this change and adapt very well.
Please rewrite these ideas, make the essay look well structured and organized.

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