3 sentences

1. 我的自信心也回来了。

   wǒ​de zì​xìn​xīn yě huí lái le.

   My self-confidence has also returned.

   Source: CCMatrix

2. 体育运动是建立自信心的良好途径。

   tǐ​yù​yùn​dòng shì jiàn​lì zì​xìn​xīn de liáng​hǎo tú​jìng.

   Sports are a great way to build self-confidence.

   Source: CCMatrix

3. 同样，更多的能量和更瘦，更健康的身体可以增强你的自信心。

   tóng​yàng, gèng​duō de néng​liàng hé gèng shòu, gèng jiàn​kāng de shēn​tǐ kě​yǐ zēng​qiáng nǐ de zì​xìn​xīn.

   Likewise, more energy and a leaner, healthier body can boost your self-confidence.

   Source: CCMatrix