If only there were more of me to finish the work faster.
I wish there were many me's to finish working faster.
1)If only there were more of me to finish the work faster.
(自分がもっといれば仕事が早く終わるのにな)
If only 〜=「〜だったらなぁ」
2)I wish there were many me's to finish working faster.
(仕事を早く終えられるように私がいっぱいいたらいいのに)
I wish〜 =「〜を願う」「〜だったらいいのになぁ」
many me's = 私がいっぱい
このようになります。あとは:
「自分みたいな人がたくさんいるわけではない」
it doesn't mean there are a lot of people like me
「自分みたいな人はたくさんいない」
there aren't a lot of people like me
となります。ご参考に。