How to Get Out of a Difficult Habit

When we face a difficult habit, like writing or big tasks at work, there's a lot of uncertainty in those tasks, so we start finding reasons to put it off. Temptation is all around us and our habitual response is to just give in, rationalize and let the temptation rule our response. Once we start to believe these rationalizations, sticking to anything goes out the door. We don't need to like everything about an experience to put ourselves fully into it. The problem is that with every habit, with every difficult project, we're going to find multiple moments of discomfort, of disliking the experience. Why do we continue to let these obstacles keep us from making progress?