When my brother got married, I decided to move forward with my life
When my brother got married, I decided I had to move my life on
その文章が英語で「When my brother got married, I decided to move forward with my life」か「When my brother got married, I decided I had to move my life on」と言います。
弟が結婚 ー my brother got married
したから、 ー when
私も ー I
前に進む ー to move my life on / to move forward with my life
。。。まなきゃ ー had to
と思ってる ー decided / thought
参考になれば嬉しいです。