I realized people wouldn’t take me seriously until I delivered some results.
こんにちは！
ご質問ありがとうございます。
ご質問について、いくつか言い方が考えられますが、例えば、
I realized people wouldn’t take me seriously until I delivered some results.
とすると、「自分を理解してもらうには、まず[実績をつくらないと](https://eikaiwa.dmm.com/uknow/questions/4475/)いけなかった」というニュアンスになります。
When I first joined, even though I was communicating with the same energy and in the same way as I do now, people were dismissive, and I couldn’t get things done smoothly. I think part of it was because I hadn’t built trust yet, but once I had some tangible achievements, people recognized that I was capable, and things started moving more easily. とすると、ご質問にある内容を伝えられます。
役に立ちそうな単語とフレーズ
take someone seriously 本気で受け止める、認める
tangible achievements 目に見える成果
参考になれば幸いです。
日本 
