Thanks for doing your homework, Min!
Here are some corrections:
I think the mental state of the people who predict the future is a bit unstable. (If they can really see the future.) People will face both good happenings and bad situations of in the future. They will get lots of stress too, as they can see the terrible wars or any pandemic and epidemic, they might see the apocalypse. Moreover, if they saw see something that can turn the tables on the human beings or the Earth, but it can???t be revealed out yet, they will get pressured and it may be used as a threatening from other people who want to use it as in a negative way. These people-the predictors, will get mentally fatigued, not being able to relax. Therefore, the predictors may have a really unstable and doubtful mental state.