I think the first step is to let go of our tendency to turn teachings and statements into universals. It's all in context! Of course we need to let go of our frustrations that take up too much of our energy. But in the Buddha's case, he caught a glimpse of enlightenment and knew he had to go for it, and not let his inner obstacles hold him back. In a way, he was doubling down on letting go... and I hope this hasn't further confused you!