感情にはしるな。冷静になれ！の英語

Don't let your emotions rule you. Be calm!

Don't let your emotions dictate your actions.

Don't let your emotions dictate your actions.

Don't let your feelings show.

in a cold unemotional manner

Don't change your mind.

to soothe one's feelings

Don't change your mind.

I get emotional sometimes.

Don't get so emotional.

Don't let your feelings run away with you.

have no command over oneself

Don't lose your cool.

emotionally unmoved

emotional impenetrability

without compassionate feelings

Emotions were screwed up

command one's passion [temper]

suppress [contain] one's emotions

keep one's feelings in line

Don't get emotional over nothing.

I fake that emotion.

to prevent the expression of feelings

Have a regard for other's feelings!

Don't do that! That's gross.

free from emotional appeal

in an overly emotional manner

to excessively cause unfavourable feelings

a feeling of antipathy

emotionally purging