Don't get frustrated if your thoughts wander. That is one of the main ways we fall asleep. WILD is not like traditional meditation. You have to let your thoughts wander a little so you will fall asleep. The trick is to keep reminding yourself of your goal. Just make an effort to try and remind yourself that you are going to become lucid. You are going to recognize the dream when it starts. Keep bringing your attention back to that every so often, but don't stress about keeping it there. Bounce back and forth between your intention and your drifting, sleepy thoughts.