You need to build your self-esteem.

你需要树立自尊心。

《牛津词典》

In order to build up your self-esteem, the targets you set should be within your reach.

为了增强自尊心，你设定的目标一定要是你能够达到的。

youdao

Build self-esteem. This doesn't mean unmerited praise, but it does mean expressing support for a job well done.

建立自尊，这并不意味着不恰当的表扬，但这确实意味着对一件做得很好的工作表示支持。

youdao

Because football can build character and teach invaluable life skills and build self esteem.

FORBES: Youth Football--Parents Gone Wild

Instead, he wanted to "empower people" and "build self-esteem", adding that social media could be a useful tool in harnessing peer pressure.

BBC: Obesity marketing campaign 'cut'

It shows that fat people can be successful, build self-esteem and then people eventually get the motivation to do something about it.

BBC: Fat stars 'make obesity normal'