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You can choose if you want to raise or lower your self confidence.

你可以选择是要自信一点还是相反。

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Emotional changes. Low testosterone might contribute to a decrease in motivation or self-confidence. You might feel sad or depressed, or have trouble concentrating or remembering things.

情绪波动。睾丸素偏低可能会令人意志消沉或缺乏自信。你也可能感觉悲伤、压抑，或无法集中注意力或记忆力减退。

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These, for most, are the primary reasons to reject Euro entry, not any kind of xenophobia or lack of self-confidence.

BBC: Have your say

Christopher Ray, of the Headmasters' and Headmistresses' Conference, which represents independent school leaders, told BBC News the new system could potentially harm "students who only when they get their AS-level results in Year 12 realise how bright they are, who are perhaps in an underperforming school or college and who suddenly have the self-confidence to aim for the stars".

BBC: A-level plans may 'threaten uptake of tough subjects'

For groups that will be inclined to react with anxiety or anger, top management visibly demonstrates passion, self-confidence, and a steely resolve to help channel that fear and anger into a determination to act and win.

FORBES: Four Ways to Increase the Urgency Needed for Change -- Part II