Dear Eteri, this question maybe discussed in different ways: for economic point of view, maybe economic growth and revenue can be considered as criteria of happiness; while from social point of view, there are other factors (e.g.healthy life) that affect happiness.

Dear Tamat, thank you very much.

Hello Eteri

I'm aware of the study of positive psychology but was surprised to find that there was a 'World Happiness Report'

http://worldhappiness.report/

(This link needs the whole line, not just the part in blue font)

In her interesting paper, RG member, Dianne Vella-Brodrick, with Jacolyn Norrish discuss the possibility of the study of happiness, citing another paper that suggests a formula for happiness, which comprises 'the individual’s set happiness point (S), the individual’s circumstances (C) and voluntary factors that are under the individual’s control (V).'

Norrish, J. M., & Vella-Brodrick, D. A. (2008). Is the study of happiness a worthy scientific pursuit?. Social Indicators Research, 87(3), 393-407. 

https://www.researchgate.net/publication/225479464  

I agree with Tamat that happiness for an individual includes health, although some people are not in good health, but are not unhappy. But I agree - and feel that happiness in an individual is linked with physical and psychological health, comparative comfort, companionship and lack of worry. However, I feel that happiness is subjective; what makes one person happy would not make another happy. I also think that happiness can occur when - for example - pressures are removed (after completing a piece of work or examinations); but this peak would be more temporary and as a contrast to the previous stress. 

It will be interesting to see what others reply.

Very best wishes,

Mary

Article Is the Study of Happiness a Worthy Scientific Pursuit?

Dear Mary, thank you very much. Your explanation is excellent and these articles are very interesting.

Dear K. Karthik, thank you very much, these are excellent quotations.

Happiness is how we take it, perceive it towards what we aim and how we plan our micro level activities with our prior knowledge and these activities becomes our criteria for happiness which would be different like a milestones for the type of happiness and at the end, reaching our destiny becomes the real success.

Balanced harmony. and the virtue of service to the most needy, experienced as a privilege. Paul