Help Me Understand My Own Avoidance Patterns

Avoidance is not laziness. It is a functional response to a perceived threat, often so habitual that the threat no longer needs to be conscious. Understanding which threat your avoidance is actually protecting you from is more useful than a productivity technique designed to override it. This names the function, applies it to a specific pattern, and designs a small experiment that tests the avoidance rather than fighting it.

I have a pattern of avoiding {AVOIDANCE_CONTEXT} even when I know it is in my interest to do it. The avoidance looks like: [describe what you do instead].

Help me understand this pattern more clearly:
1. What the most common psychological functions avoidance serves (what it is protecting me from: discomfort, failure, judgment, uncertainty, or another)
2. Which function best fits my described pattern and why
3. What the cost of continued avoidance is, stated specifically for this situation rather than in general terms
4. One concrete experiment I could run this week that would test my avoidance rather than trying to overcome it by willpower

Do not tell me to 'just start'. If starting were sufficient, I would have started. Tell me what is actually going on.