No; in other words, the stagnant performance of the Japanese economy since the mid 1990s can be explained by massive private sector de-leveraging that somewhat outweighed public sector leveraging. From 1998 to 2008, they delevered from 345 debt to GDP to 283, while maintaining 5-6% unemployment and a steady level of GDP.
This is a somewhat less bleak picture than stagnant economy and skyrocketing debt. I wouldn't worry as much about suicide; Japanese culture has more of a tradition of suicide in the first place.
So in other words, the Japanese condition of the last 20 years is considerably better than we can hope for. Probably true.
I think you will see a
lot of suicide due to economics in the US. Poverty-based suicide is common around the world.