Things that damage the economy indirectly.
For example I feel that fast food and an unhealthy lifestyle leads chronic health problems that probably affects the economy not just monetarily.
Of course we can't just deny these people care, just promote a healthier lifestyle.
What are other things that we can change that will affect the economy in a positive way?
The economy in your country go positive way, maybe by using local products. So whatever you do, use local products, so that the selling value of your country's economy goes up.
Trivial things that have an impact on the economy, maybe people who prefer to play games or social media and other things that make unemployment increase. High unemployment rates can destroy the economic aspects of the country.