The reason bad habits seem so harmless is because they usually are. Most of the time they can be easily fixed. If they aren’t fixed, that’s when you should really start to worry.
Bad habits exist only if you let them. If you purposely choose to ignore them, it’s your own fault and reveals a lot about your character.
Buddha once wrote, “He who does not rouse himself when it is time to rise… never finds the way to knowledge.”
It all essentially boils down to this: People too lazy to fix their flaws are people too lazy to succeed.