If you want good relationships, you must have the confidence to be self-assertive when required.

如果你想要发展好的关系，在需要的时候必须要有自信，拿出主见来。

《柯林斯英汉双解大词典》

MEANING: you show your teeth when you smile and when you bite, so they reflect how self-assured and assertive you feel.

解梦：微笑和咬东西时人会露出牙齿，因而它们象征着自信和自我肯定。

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Having a willingness to take risks socially, to be assertive, to self-disclose, and be responsive to others are strategies to defeat loneliness.

敢于承担一定的社会风险、自信进取、自我表露以及对他人负责都是用来击败寂寞的武器。

youdao

Sometimes it's accompanied by a smile: it's self-assertive without being confrontational.

WSJ: Yielding With a Purpose

DiYists believe in the primacy of self: the autonomous, assertive, nose-ring-wearing, disco-jumping self.

ECONOMIST: Radical protest

With German unification and the arrival in power of a new generation of leaders born after 1945, the French realise that Germany is shedding many of its former complexes, becoming more self-assured, assertive and nationalistic.

ECONOMIST: Where is it going? | The