Developing concern for others, thinking of them as part of us, brings self-confidence, reduces our sense of suspicion and mistrust, and enables us to develop a calm mind.
You need self-confidence and determination: feeling depressed and losing hope will never really help to correct any situation.
With the realization of one's own potential and self-confidence in one's ability, one can build a better world. According to my own experience, self-confidence is very important. That sort of confidence is not a blind one; it is an awareness of one's own potential. On that basis, human beings can transform themselves by increasing the good qualities and reducing the negative qualities.
It seems to me that self-confidence and the ability to stand one's ground are essential if we want to succeed in life. I am not talking of stupid self-assurance but of an awareness of our inner potential, a certainty that we can always correct our behavior, improve ourselves, enrich ourselves, and that things are never hopeless.
Your own pain is involuntary; you feel overwhelmed and have no control. When feeling the pain of others, there is an element of discomfort, but there also is a level of stability because you are voluntarily accepting pain. It gives you a sense of confidence.