Yeah, I think learning to accept shortcomings and move on has been tremendously important for me.
Regarding the accepting of test anxiety, I found some relevant text I'll share in a minute. As mentioned above, I asked a psychologist for tips about dealing with test anxiety. I also mentioned wanting social science material to read to help with VR, and got it... A quote relevant to topic:
"Suppose the emotion that shows up is anxiety. If [we don't accept that emotion], and instead consider it unacceptable, we could end up with anger about our anxiety: How dare they make me feel like this? Or sadness about our anxiety: What's wrong with me? What's doing this to my body? Or a mixture of all these feelings.... Secondary emotions are like a [a positive feedback loop],... an amplifier."
"We [can] get emotionally distressed by our own feelings, we also [might] do whatever we can to get rid of them, regardless of the long-term costs. We draw clients' attention to the many ways they've done this - through more obvious strategies such as drugs, alcohol, food, TV, gambling, smoking, sex, surfing the net - to less obvious emotional control strategies, such as ruminating, chastising themselves, blaming others, and so on. (...many control strategies are not an issue, as long as they are used in moderation.)"
Source: Embracing Your Demons: an Overview of Acceptance and Commitment Therapy By Russell Harris - published in Psychotherapy in Australia, vol. 12 No. 4. Aug. 2006
I think this is all based on a specific psychological theory. It still might help someone.