Wouldn't this topic vary from person to person and the mindset he or she has?

OR

>> Wouldn't this subject differ depending on the individual and their mentality?

First of all, I think I can overcome my greatest fear.

OR

>> In my case, I believe I can conquer my biggest fear.

Because I'm positive person and thinking positive.

>> Because I am an optimistic person having a positive mindset.

I don't thinnk there's anything that can't be overcome, and I think let's have fun if it's something I have to do anyway. 

>> I don't think there's anything that can't be overcome, and I think I must have fun if it's something I have to do anyway. 

And because I can't do anything about what's already happened, I try to think about how to respond to what's given.

OR

>> I also make an effort to consider how I can react to what has been given because there is nothing I can do about what is already done.

However, it is difficult to judge because each person has a different mindset and the fear they have and the size of their fears are different.

OR

>> However, it is tough to make judgments because each individual has distinct perspectives and different levels of fear.

This is because there are people who think positively and easily like me, while there are people who are negative and struggle.

>> This is because there are people who think positively and easily like me, while there are people who are negative/pessimistic and struggling

For example, I'm going to have my first moment in a little while. I'm going to go through my first job contract, my first move, and my first day of work.

Or

>> For instance, I will experience something for the first time in just a few days. I will be going through my first day of work, my first shift, and my first job contract. 

People who find everything baffling and difficult because it's their first time, but who have been through this or who think it's a small thing, may not understand what's hard or why they're so scared when they see this problem.

>>Correct