14. Staying up too late
No matter how difficult it can be, it is one of the worst habits you need to break, especially if you don’t live alone. You know your body needs 7-8 hours of a sleep per night in order to function properly.
And if you are staying up too late and waking up early in the morning for a class or a work, it is not possible to get that amount of sleep. Make sure you plan your schedule so you do not stay up too late.
We all have both good and bad habits. However, some of them are so annoying that people might simply start avoiding hanging out with you. Pay a closer attention to your habits and make sure you eliminate the worst ones.