I’m not going to lie and say world peace or unlimited food etc as it wouldn’t last and no doubt would bring its own problems…
1. Give everyone when born memories of both good and bad so as they grow up they have a greater respect of whats around them.
2. Give everyone a decent education, and keep them there until they achieve a reasonable level to see them through the rest of their lives.
3. Make politicians honest. Dont stretch the truth, if its going to the dogs say something whilst theres an opportunity to do something. Don’t steal public money for personal habits etc etc (this one could go on a while)