Are accountants/financial specialists really good at managing their own money as well?

They merry money managers ;)

Financially., Yes

Administratively: It depends on characteristics of the person   and his  management skills

agreed with all.............

It should be like that, but as in any other cases certain exceptions.

Mostly Yes..its a inner quality every one can manage if they don't then any one else can did this for them.

Not necessarily

Sometimes the door Carpenter dethroned