立場だったら

if [someone] were in [someone's] position

→ 立場
phrase Uncommon #11,585
if [someone] were in [someone's] position Used to imagine being in another person's situation or circumstances. 立場 means “position,” “standpoint,” or “situation,” and だったら means “if it were.”
JA: 私があなたの立場だったら、もっと慎重に考えます。
EN: If I were in your position, I would think more carefully.

君が僕の立場だったらどうした考えてほしい

I want you to think about what you would have done if you were in my position.

私があなたの立場だったら辞めているだろうに

If I were you, I'd have quit already.

もし君がその立場だったら許可するか

If you were in that position, would you allow it?

— 善き人のためのソナタ (2006)

もし私があなたと同じ立場だったら今夜は早く寝ると思う

If I were in your position, I think I’d go to bed early tonight.

君が僕の立場だったらどうするかね

If you were in my shoes, what would you do?

もし私が君の立場だったらそうしないだろう

If I were in your shoes, I wouldn't do that.

君の立場だったら私も同じ事をするだろう

If I were in your position, I would do the same thing.