泣けば

つらいときは泣きたいだけ泣けばいいと思うよ。

I think you should cry as much as you need to when you're having a hard time.

泣きたいなら思いっきり泣けばいいじゃん。

If you want to cry, then just cry your heart out.

泣きたい時には泣けばいいんだよ。

When you feel like crying, you should just cry.

悲しい時には泣けばいい。

When you're sad, it's okay to cry.

泣けばよいのか悪いのか。

I don't know whether I should cry or not.