I surround myself with positive people.
I spend time with people I look up to.
I prune my social circles to those who provide social and emotional value.
I do not hang out with people who cheat, steal and lie.
I consciously decide who I should or should not hang out with.
I am considerate and polite towards people I want to spend less time with.
Discuss this health aspect with others. Ask questions and get answers.
Private notes on 'social network'
Choosing your social network is important. People who are surrounded by happy people are more likely to become happy. People are influenced to behave like the people they surround themselves with. Social influence is a significant factor in obesity and other health issues. If a family member or a friend is obese, you’re much more likely to be obese, too. Strong-willed friends can help increase your self-control. Some people are better at providing social support. Social support can shield you against the risks and negative health effects of stress.
People are lonely because they build walls instead of bridges.
-  Fowler, J. H.; Christakis, N. A (3 January 2009). "Dynamic Spread of Happiness in a Large Social Network: Longitudinal Analysis Over 20 Years in the Framingham Heart Study" (PDF). British Medical Journal 337 (768): a2338. doi:10.1136/bmj.a2338. PMC 2600606. PMID 19056788. View
-  Christakis, NA; Fowler, JH (26 July 2007). "The Spread of Obesity in a Large Social Network Over 32 Years" (PDF). New England Journal of Medicine 357 (4): 370–379. doi:10.1056/NEJMsa066082. PMID 17652652. View
-  Shea, C. T., Davisson, E. K., & Fitzsimons, G. M. (2013). Riding Others’ Coattails: Low self-control individuals value self-control in others. Psychological Science, 24(6), 1031–1036. doi:10.1177/0956797612464890. View
-  Michael L. Lowe and Kelly L. Haws. “(Im)moral Support: The Social Outcomes of Parallel Self-Control Decisions.” Journal of Consumer Research: August 2014. View
-  Negative social interactions and incident hypertension among older adults. RS Sneed, S Cohen Health psychology 33 (6), 554 www.ncbi.nlm.nih.gov/pubmed/24884909
-  Salovey, P., Detweiler, J. B., Steward, W. T., & Rothman, A. J. (2000). Emotional states and physical health. American Psychologist, 55, 110-121.
-  Cohen, S., & Willis, T. A. (1985). Stress, social support, and the buffering hypothesis. Psychological Bulletin, 98, 310-357.