1. Raise the retirement age. 2. Increase immigration of young people. 3. Lower wasteful government spending on pointless causes. 4. Make it easier for people to have families/get married. 5. Get people to see that families can provide just as much happiness/satisfaction as designer handbags/clothing/smartphones/working.
Japan should try something similar in taught, but a complete opposite of China's one child policy. Like benefits for women who would marry and have children. Benefits for being in a family. Something that would entice people to consider starting a family instead of pushing for a career for their entire life. Benefits for having more than one child... and so on. This situation can still be reversed, but only if the government is willing. Also the way people try to spend as much time as possible at work, I just think it’s wrong in all aspects. One should do everything in one's power to finish work on time and go home to spend time with one's family. It's horrible when a child treats a parent like a guest due to spending so little time home. Whatever you do for your family means little if you are not present in the family.