RT @DegenRolf: What doesn’t kill us makes us stronger: A moderate amount of adversity brings out mental toughness. https://econtent.hogrefe.com/doi/abs/10.1027/2512-8442/a000011…
Source date (UTC): 2018-08-08 23:34:56 UTC
Original post: https://twitter.com/i/web/status/1027337394289295366
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