The person who originally stated that 'unhappiness is a sickness you can cure' must believe that unhappiness is a sickness or indisposition which the afflicted person can do something about. The implications are that unhappiness is something which you allow to happen to you and also that you can do something about it - cure it.
And right enough some people can indeed overcome unhappiness, sadness and depression by developing a positive outlook on life and being able to laugh while others try in vain to drown their sorrows in drink or whatever.
yes
how to
A hernia often requires surgery to cure completely.
Consult a vet
By takeing out the bone
yes, of course my mother has a HIV IT CAN CURE diseases.
Unhappy means not happy, down, sad, depressed, or angry.
What kind of sickness can pomelo cure?
sad
"Concertation" means strife and unhappiness.
The prefix in "unhappiness" is "un-," which means "not." It is added to the root word "happiness" to change its meaning to the opposite.
The word "misery" can be used to describe a state of no happiness. It refers to intense unhappiness or suffering.