Froming our owm destiny is what ambition is about.
“人的志向/追求/抱负/雄心就是创造自己的命运.”
句子分析如下：现在分词短语做主语,系动词和what引导的表语从句,即系表结构,做谓语.
句中短语：form one's own destiny 创造自己的命运
希望能帮到楼主.加油!