Ex1)
a) Empathy is about understanding someone else in thinking and feeling.
b)Empathy can treat loneliness,depression,anxiety and fear.
c)Volunteering is a way of developing empathy.Challenging yourself to care for others also develops empathy.Spending time at an animal shelter,or having a "sharing circle" with your family are also great opportunities for increasing your empathy.
Ex.2)
a)emphasizing-highlighting
b)essential-critical
Ex3)
a)to fail-to succeed
b)worthless-valuable
Ex4)
It is true,because they feel naturally what other people feel or even think.