Give me a example to describe a characters anxiety or fear

Sure! Here’s an example of a character experiencing anxiety:

As Clara stood at the edge of the crowded room, her heart raced like a wild animal trapped in a cage. The muted sounds of laughter and chatter swirled around her, but all she could hear was the pounding of her pulse thrumming in her ears, drowning out any semblance of normalcy. The flickering overhead lights cast erratic shadows that seemed to dance menacingly across the walls, each shift reminding her of the uncertainty that wrapped around her like a thick fog.

She felt her palms begin to sweat, slick against the fabric of her dress, as she tried to steady her breath. Her mind spiraled, racing through a litany of fears: What if no one talked to her? What if they did, and she stammered like a fool? What if she tripped and fell, the center of attention for all the wrong reasons? The mere thought sent icy fingers creeping up her spine.

Clara's gaze darted around the room, searching for a familiar face, some anchor in the sea of strangers. When she spotted her friend Sarah across the room, a wave of relief washed over her, only to be quickly replaced by the sinking realization that crossing the room felt like an insurmountable task. The thought of navigating through the crowd made her stomach churn as if a thousand butterflies had taken flight in her belly.

She took a step forward, then froze, her breath hitching as she caught sight of a group of people laughing heartily. Gagged by her thoughts, Clara clenched her fists tightly, reminding herself to breathe. It felt as though the walls were closing in, the laughter turning into distant echoes that morphed into whispers—each one a judgment, a reminder of inadequacy.

With every ounce of willpower, she pulled her phone from her pocket, her fingers trembling as she typed a quick message to Sarah: “Can you come here?” It was a small lifeline in a sea of anxiety, a thread she hoped would pull her back to solid ground.

In this example, Clara's anxiety is portrayed through her physical sensations, racing thoughts, and vivid imagery, allowing readers to feel her internal struggle as she faces a daunting social situation.