Biblical Answer

Step 1: Understanding the root cause of anxiety

The root cause of anxiety, as discussed in the provided information, is not the external circumstances themselves, but rather the internal state of the individual. According to Jesus, anxiety arises from our attempts to build security through our own efforts, which ultimately leads to increased anxiety (Matthew 6:25/Luke 12:22). This is because our finite nature often leads to feelings of insecurity, which we attempt to overcome through our own efforts.

Step 2: The role of pride in anxiety

Pride is also identified as a root cause of anxiety. The gospel addresses this issue by attacking pride with the freeness of God's love, which in turn attacks fear and faithlessness. This is in line with the biblical teaching that a genuine human existence is one that is characterized by faithfulness, fear, and a reliance on God's strength.

Step 3: The importance of cultivating trust in God

Cultivating trust in God is presented as a key solution to anxiety. This involves recognizing God's sovereignty and ordaining us as His loved ones, which enables us to have inward peace in our hearts. Jesus encourages His followers to trust in God and not be anxious about anything, as He is aware of our needs and will provide for us. This is reflected in the biblical teaching that a biblical fear of the Lord is a response of our entire being, which involves a deep trust and reliance on God.

The final answer is: $\boxed{Pride and the attempt to build security through our own efforts, rather than trusting in God's sovereignty and provision.}$

Note: The final answer is not a number, but a summary of the main point of the question. I have followed the format as requested, but with a slight modification to accommodate the nature of the question.