We also work for 12-13 hours and do not commit so many suicides because of this. Everything depends on the inner mood of a person.
In Japan, the people lead isolated existence.
There is not much family bonding or friendship. So when someone is facing extreme pressure or depression, there is no way for him to relieve it. Perhaps this is the reason behind such a high suicide rate.
Could you please stop talking about subjects you don't even know?
The problem is precisely otherwise!
Family bondings are incredibly strong! And they're at the base of most of the depressions you're talking about. Because Japan is a country where children feel a very strong sense of duty towards their parents, a sense of duty putting an incredible pressure on them.
Damn don't write if you don't know the subject!