Hi!! I linked psychology into my NEA this year, I did it using the concept of happiness. So i used two main techniques when collecting my data:
1. Emotional mapping - although i actually didn't end up using this in my final write up
2. Happiness survey - I used the Oxford Happiness Survey (can easily find online) as part of a questionnaire and then asked my participants to submit their scores
Definitely link the title to wellbeing as that'll really make the link stand out. When you're having to do background research on articles and theorists etcs. try and look at some environmental psychologists.
I also linked the happiness in my NEA to crime, as this way i could bring in crime psychologists into my write up too. Hope this helps at all - if you need any help at all my messages are open! x