There’s something powerful about letting go of all expectations; focusing on the thing that’s right in front of you, and taking the closest next possible step.
When you’re actually doing what you’re supposed to be doing, you need to shift your brain into a state that can let that happen. Success or failure is probably out of your control at that point. How well will this turn out? What will I be able to do with this? Will I finally succeed, or will I fail like I always do?
While you may strategize and plan, and set a desired outcome, you also need to learn to let go of all of this and focus on the task at hand. Learning to lose yourself in your work is well worth practicing.