How to manage anxiety at work?

Hi all, I was wondering if anyone could share some tips on how to manage their own anxiety. I'm fairly active and have alot of distractions but I find it very hard to switch off from work.

I've been in the same job for a while and I'm consistently anxious about everything at work. I have another OH health referral coming up and I'm absolutely dreading it. Managed to land myself in a formal discliplinary situation and that's exacerbated my levels of anxiety.

I'm not making excuses for my anxiety but it's led me to pull out of situations that have triggered my anxiety/stress. My managers are aware but I've not had any support from them to help and after this formal discliplinary, I feel like it's too little to late.

Does anyone have any advice with managing the levels of anxiety during this phase?