Hi Liam,
As I don't know much about your situation, I'm just going to try and give you some general subjective advice. Whether your breakdown was an anxiety attack of sorts, a period of intense anxiety, a depressive episode, or some sort of emotional breakdown - seeking help is crucial. As this has been your first breakdown, you will have a great chance of improvement if you get help now.
Have you mentioned your breakdown to anyone yet: your GP, a family member, or a friend? Also, have you ever been diagnosed with anxiety, or another mental health condition? Relaxation techniques can be deceptively tricky to master. Try starting with simple things. When you're in the shower, try being mindful and aware. So, focus on how the water feels as it trickles over your skin, focus on the feeling of lathering your skin with soap, massage shampoo into your hair, etc. This is sometimes referred to as a mini-meditation. These can be just as helpful.
Having relaxing and/or engaging hobbies is also helpful. Reading has been proven to relieve feelings of stress. You could also try drawing, walking, or throwing a ball around to unwind and relax. Having a tidy home environment can also have a calming effect psychologically. Being the neat person I am, I have read articles about this! It may sound trivial, but it is surprisingly important. When your physical environment (bedroom and other spaces) are tidy and organised, it helps you to find things faster, and looks more inviting and appealing. This can help you to feel more calm in your own home.
Good luck with relaxing.
Best wishes,
SM
