How to live comfortable in an over populated environment?
Stay humble is all I say for an overpopulated area. Stay close to your friends and relatives. Don't take much space. Segregate your waste and dispose it off properly. Stay updated , stay safe.
If you use plastic bags to dispose of some of your waste, make sure they are biodegradable.
Yeah and don't ever get into arguments with your neighbors especially about religion, politics and culture. Be civil and respectful. Most of the time people only reflect the attitude that others show towards them so, one way to survive in a densely populated area is to be really tolerant. Learn to just turn away.