Dialog 1 on the same page [ 同じ考えを持つ ]

Yukio:I'm getting tired of just playing speed metal all the time. Our band needs to go in a new direction.
Angela:Yeah, I want to write more ballads and love songs.
Yukio:Me, too! I want to sing about nature!
Angela:Hey, I'm really glad that we're on the same page!

Dialog 2 Practice what you preach [ 人に説くことを自分でも実行しなさい ]

Yukio:My students are always late to class.
Angela:Do you always start your lessons on time?
Yukio:Yeah, most of the time. Well, occasionally I get distracted or have to wait for students to arrive, so I start late.
Angela:That might be your problem. Remember, you have to practice what you preach.
Yukio:I see. You mean, I can't expect my students to be on time if I'm not.