Let the challenging moment makes you strong & strong. The same thing goes to lacking confidence and feeling jealous of people around you. If one takes challenge in his stride,it makes one more sensitive & responsible. Challenges make one to learn not to give up under pressure & inculcates virtue of positivity to tackle the moment of struggle with courage & confidence. Never be victim of passive behavour in mist of challenges. Passive behavior leads a sense of self defeat which in turns lead to internal conflict.Internal conflict may lead to stress,anger,resentment,feeling of inner guilt & feeling of victimization.