I fear failure

Fear is an emotion. All negative feelings come from your thoughts. When you think about consequences of failure, this will most likely trigger some sort of negative feeling, which will make it harder for you to begin a task. There are all sorts of thoughts you might have regarding a task that cause fears. The more thoughts about the task, the more negative feelings will they cause and less likely will be for you to begin working.

So, to eliminate negative feelings, you have to eliminate thoughts that cause these feelings. The less thoughts mean less negative feelings (discomfort). And the good thing is, you can do that by just lying on the couch, without moving a finger.