It seems that money cannot buy happiness. 
The happiest
Nigeria
Mexico
Venezuela
El Salvador
Puerto Rico
The least happy
Russia
Armenia
Romania
hmm...interesting...they mentioned that things that might make a certain group of ppl happy in one place might not have the same affect on another group...what was the standard critera then to measure the happiness factor? they must've had a relative ground from which they measured this...
I believe some of the questions asked pertained to the following criteria.
PATH TO HAPPINESS
Genetic propensity to happiness
Marriage
Make friends and value them
Desire less
Do someone a good turn
Have faith (religious or not)
Stop comparing your looks with others
Earn more money
Grow old gracefully
Don’t worry if you’re not a genius
This was all done as part of the World Values Survey, and the questions they put to respondents are listed in the questionnaire in the link below.