According to Shakyamuni Buddha, it's normal for human beings to be anxious, because it's normal for human beings not to understand themselves. When you don't understand yourself, you're uncomfortable and scared. When you realize that you're anxious, Buddha's teaching is to practice being patient with it.
Being Upright: Zen Meditation and Bodhisattva Precepts (ed. Shambhala Publications, 2016) - ISBN: 9781930485594