How could I change the world?

I would change the world by making something that could solve depression, a drone flying machine that could have the person on a video sent to the depressed person and they see them in the cloud.The drone could be flown by the person and they would be able to talk to them and be there for them when they are sad or depressed.The strengths that would come out of this is that it would be easy to build and the video could be there connected to the drone and ready to go.The people that are sad could see this that can't come over they can see them in flying form and the best part is that if they are  mailed to somewhere out of the country they could get a text and the drone would start and the person could be ready to fly.