The workplace creates its own specific cocktail of anxiety triggers: performance pressure, interpersonal conflict, deadlines, emails that read as threats, the perpetual performance of competence.
A few strategies that actually help: building micro-recovery moments into your day (even two minutes of slow breathing between tasks), being honest with a trusted manager or HR if your anxiety is affecting your work, and setting firm boundaries around after-hours communication.
Identify the specific triggers rather than experiencing work as one undifferentiated stressor. When you know what sets you off, you can prepare, manage, or address it.
You are allowed to be human at work. That is not unprofessional. It is simply true.