The most aspect of the TOEFL

Not only taking the TOEFL, but also any other test is stress for me. But especially taking the TOEFL is the most stressful, because all kinds of sections of the TOEFL are hard, such as listening, reading and grammar. Among those sections, I have the most difficulty with the listening section, because I’m not good at vocabulary. Even though I can hear some words, I don’t know the meaning of those words. So it makes me stressed.