Bite the bullet
To endure a painful situation or to face something difficult.

Break down
To lose control of one's emotions and start crying or become very upset.

Burning with desire
Feeling a strong wish or longing for something.

Cry over spilled milk
To be upset about something that has already happened and cannot be changed.

Get cold feet
To become nervous or hesitant about something.

Have a heart of gold
To be very kind and generous.

On cloud nine
To be extremely happy.

See red
To become very angry.

Take it to heart
To be deeply affected by something.

Walking on air
To feel very happy and carefree.

Wear your heart on your sleeve
To openly show your emotions.

At the end of your rope
To be at a point where you cannot cope anymore.

A bundle of nerves
Someone who is very anxious or nervous.

Caught between a rock and a hard place
Facing a dilemma with no good options.

Feel blue
To feel sad or depressed.

Jump for joy
To be extremely happy about something.

Keep your chin up
To remain positive in difficult times.

In a funk
To be in a state of depression or sadness.

Throw a tantrum
To have an outburst of anger, often like a child.

Emotional rollercoaster
Experiencing a wide range of emotions, often rapidly.