Have a look at this article: https://editorialexpress.com/cgi-bin/conference/download.cgi?db_name=EAAERE2015&paper_id=163

Dear Elsa, I guess a first step might be to decide on whether to look at a local or regional sample of persons or whether to take an India-wide sample. I'd definitely encourage you in combining a quantitative and qualitative approach (if your time and resources permit). For the former, surveys of different kinds may be practical, for the latter in-depth personal interviews. In order to narrow down the focus of your study, it might be helpful to confine yourself to one dimension of wellbeing, for instance - as you mention - psychological aspects. Hope this helps. Best, Julius

Dear Elsa, you might be interested in the "solastalgia" concept developed by Glenn Albrecht and colleagues in Australia, and since applied in several other contexts. It is a state of distress resulting from environmental changes. I attach a paper where we used the concept (and an index to measure it developed by Nick Higginbotham, a colleague of Albrecht's) in work on environmental distress we've done with Indigenous peoples in eastern Canada.

Article Development and validation of a measure of climate change anxiety

Article Validation of an Environmental Distress Scale

Article Climate anxiety: Psychological responses to climate change

https://www.mdpi.com/1660-4601/17/7/2362

Untangling the environmentalist's paradox: why is human well-being increasing as ecosystem services degrade?

https://academic.oup.com/bioscience/article-pdf/60/8/576/19404446/60-8-576.pdf

The psychological impacts of global climate change.

https://www.teachgreenpsych.com/wp-content/uploads/2018/10/Doherty-Clayton-2011-Psych-effects-of-climate-change.pdf