Habits are a sequence of actions which are performed most of the time without awareness or our conscious guidance. Intrinsically they are neither bad nor good. If it is not contributing or actually hindering our growth or in any way hindering us in reaching our goals, it is labelled as bad or negative. Knowing this a wise person will try to use habits to his advantage.
As usual this also begins with introspection. If you are prone to minor accidents, it may be because you are all the time fixated on your smart phone. I sometimes keep the milk on the stove and start focussing on the whatsapp messages. You know what happens.
Once you have identified the habitual behavior which contributed to the accident, you can design a different set of activities that will overcome the problem.
It is sad fact that we tend to have more "bad" habits than good. In fact most of our problems are due to these habitual behaviors. They start taking a life of their own and you become the victim of these habits.