A.
A rich person is not necessarily happy.
B.
Things people often overlook may be the very source of happiness.
C.
Happiness can be promoted on a scientific basis.
D.
We should mainly rely on ourselves for happiness.
E.
Happiness lies in giving instead of taking.
F.
The environment is a source of happiness.
G.
Happiness can be achieved if we stick to the best of our values.