How do one train his/herself to do things for others...?

(atheists &christians) People are by nature negative in their viewfinder. If you listen to a person speak much wisdom that you didn't know before & learned much good from it & applied it & it produced much fruitfulness than you have a good viewfinder but sadly most don't have this. Most learn what is good & productive & turned to their own way the way of death. In the darkness of this world there is much crying and pain (weeping & gnashing of teeth). However, in the lighted world by the power of the living God there is much peace & joy.