I'm not sure that there is a single action harder on a family than suicide. That grief is long-lasting and like all losses of family members, never totally goes away. They really need our prayers.
This is also a reminder not to envy well-known successful people as our culture is wont to do. Every person and every family struggles with issues. Contrary to popular belief, money, fame and "success" do not cure them. Life is just rough sometimes no matter who you are. That's why it is so important to have compassion and invest in people.