sources:
https://www.health.harvard.edu/diseases-and-conditions/five-action-steps-for-quitting-an-addiction
https://www.nimh.nih.gov/health/statistics/major-depression
sources:
https://www.health.harvard.edu/diseases-and-conditions/five-action-steps-for-quitting-an-addiction
https://www.nimh.nih.gov/health/statistics/major-depression