Good job. Some answers are thought provoking.

"It's hard to get along with a good fighter.  It's hard to fight with a peacemaker", for example, sounds more philosophical than the original.

 

"Not all the talented people will be discovered" makes things crystal clear by shedding the shell of a proverb.  

 

"不是每个人都相同的”is how a native speaker would usually do it.

 

Great effort!