Another strategy involves taking an attitude check. If your answer is yes, then it is time to figure a way to make an attitude adjustment. This may mean giving up on the idea that everything in life must be interesting or that I have to like all my classes for them to be worthwhile. It may also mean re-evaluating your goals and determining the steps that do or do not fit into the larger picture. If succeeding in the boring class seems to be a necessary step to achieving your larger goals, that fact alone may motivate you.
Fear of failure is another reason people procrastinate.
In the former case, I gave it my best and failed. In the latter, because I really did not try, I truly did not fail. For example, you may postpone studying for a major test and then pull an all-nighter. The resulting grade may be poor or mediocre, but you can say, I could have done better if I had had more time to study. Similarly, you may delay researching and writing papers until the last minute, turning papers in late or incomplete.