Scholarship / A time when I overcame one significant obstacles that I were able to improve other people's lives [4]

Hi, I am applying for a scholarship and I'm supposed to write essays. One of the essays is: Describe a time when you overcame one or more significant obstacles/challenges so that you were able to improve the lives of others in your community. How did you react to the challenge(s) and what did you learn from the experience? (100-word maximum)

Please I want a review on my essay if it correctly answers the prompt.

It came to a time when my father lost his job through bush fire rumbling through his entire farm where he lost all the harvests. I have to walk ten miles away from our community to hand-pick a left over harvested maize farm where I could gather few buckets to feed my family. Now I became the breadwinner of the family after my father. All the members of the community appreciated that small gesture and activity undertaken by me. To this I learnt that one may become successful with determination and hardworking.