essay part 2

Moreover, mistakes make us to behave more wisely when we come to the same situation later in the future.

>> Moreover, mistakes make us behave more wisely when we come to the same situation later in the future.

For example, when my high school math teacher suggested me to participate in the math competition, I rejected it because I lacked confidnece.

>> For example, when my high school math teacher suggested me to participate in the math competition, I rejected it because I lacked confidence. (Note: be careful with your spelling)

OR >> For example, when my high school math teacher suggested that I participate in the math competition, I rejected it because I was not confident enough.

As a result, my friend, who usually got a lower test score than I got, went to the math competition instead of me and won the prize, making me realized that I missed a good chance of getting a price.

>> As a result, my friend, who usually got a lower test score than I did, went to the math competition instead of me and won the prize; making me realized that I missed a good chance of getting a price.

OR >> In the end, my friend, who usually got a lower test score than I did, joined the math competition instead of me and won the prize; making me realized that I missed a good opportunity. 

I regretted about this so much at that time but this mistake made it possible for me be more challanging, grabbing any opportunities come to me.

>> I regretted about this so much at that time but this mistake made it possible for me challenge myself more and grab any opportunity that would come to me.

Therefore, I believe that we can be more deliberate and act wisely when we come to the same situation, if we have learned from our mistakes.
>> Therefore, I believe that we can be more deliberate with our decisions and act wisely when we come to the same situation, if we learn from our mistakes.