let's use the analogy you call the radio in your society. now, you know that all the programs are coming to the radio all at the same time; but only the one you hear is where your dial is tuned. as all those earths exist right here right now, the one you get is the one to which you are tuned.
so create the image of the one you prefer. LIVE in the fashion you would live in that world. you will be the receiving beacon for that energy, so that that program can be broadcast in this reality, and others can pick up on it and decide to tune their dial to that frequency as well. if they don't know that such a program exists; if there are no examples, then others will never know the program exists, and will never tune in their dials to that frequency.
if you have an image in your mind of how you would like the world to exist, exist in your life as if that is the reality for you. all the ideas of the suffering and the warfare and the hatred and the frustration: they are illusions, old programs. and if you are not already tuned into that new program, then when they ask you, "say, have you heard any good programs lately?" you will not know what station to tell them to tune in to.