In everyday life, when the fixation on 'solvable problems' collides with 'an attitude of affirming finitude,' what character traits should one have, from a virtue-ethical perspective, in order to recognize this conflict and accept it?

I think the mechanism of Embrace is more closely correlated with virtue ethics than with deontological perspectives. The character traits expected to accompany an embracing attitude are as follows.

1. A person is more likely to make moral decisions. As I will explain later, I believe that the consensus on morality that modern society has built is rational from a long-term perspective even at the individual level. Therefore, when there is less incentive to make short-sighted or irrational decisions, a person is more likely to abide by this morality.
2. A person becomes more inclusive toward others. Ultimately, humans share some of the circuitry for making value judgments about themselves and others (although this may vary depending on individual SVO), so when a person has a high degree of embracing attitude toward themselves, they are expected to be more likely to extend that same generosity to others.
3. Overall, the cognitive resources available to a person increase. This may overlap with the first reason to a large extent, but I think that the more cognitive resources available for decision-making, the more capacity a person has to pursue the values we commonly call 'virtue.' In addition to these, various other dispositional traits may emerge, but at this point, this remains a speculative view.