If you could make a decision that would benefit the world for the next 100 years, what would it be?

Sometimes, the toughest decisions are the ones that affect not just the present but generations to come. If you had to make a choice today that would ensure a better world 100 years from now, what would you do? Would it be a policy change, a technological innovation, or perhaps an educational shift? How do you think your choice would impact future generations?