Bad Habit to Quit for A Healthy Living # 1: Nose/mouth picking - This annoying and silly habit of ‘digging gold’ is one of the worst habits that goes un-questioned. This habit is not only bad for your health but it is also against common social etiquette. Picking your nose can spread various infections like cold and flu, as cold virus is passed into your body through the mucus. After touching several things and then taking the same finger into your nose, you will land at the doctor’s clinic. Hence, stop this awkward habit of pulling sticky substance from your nose, or fetching left over food strands from your mouth.