If you're struggling, it's important that you share this with someone. If you have immediate concerns about yourself or someone else, contact the emergency services by dialling 999. Professional help is available through your GP and you can also speak to your employers' occupational health department to find out what services are available to support you.
Whilst we can't endorse any products and professional advice should not be substituted, you might find the below resources useful in seeking help, learning more about mental and emotional wellbeing, and developing coping tools.
Check them out and explore what works for you.
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(Pssst! There's more where that came from... we have plenty more brilliant resources pending. Stay tuned.)