Habits use a different part of the brain than making decisions. Therefore, when you begin, it is not a choice, but once it is recognized, you can choose to quit it at that moment. Sometimes what will help is simply asking a friend if you do it all the time.

I could probably never recall how many I would come home from a long day of work and spend my whole night watching TV and videos for hours while barely spending time with my family or getting any exercise, and looking back at those choices fills me with the deepest of regrets.