I am not sure exactly what Heaven will be like. But I do know that when we die and if comes the time for God to judge us, He will not ask, ‘How many good things have you done in your life?’ Instead, He will ask, ‘How much love did you put into what you did?’
What can you do to promote world peace? Go home and love your family.
The extent of your consciousness is limited only by your ability to love and to embrace with your love the space around you, and all it contains.