What should I do if I end up crying, and I find myself struggling to breathe?

You are probably having a panic attack so you need to contact someone close to you or someone that is medically trained to help. Slow down your breathing and try to count your fingers to make you focus on something else.

I would sit down, take a deep breath, and think about my future and a better time. After I was a little calmer, I'd sublimate.

There are many guided breathing exercises you can try to help slow down and get control of your breathing. Here is the link to a 7 Cups form about breathing exercises: https://www.7cups.com/forum/AnxietySupportCommunity_53/AnxietySupportResources_412/BreathingExercises_79456/

If you have your phone on you, try Googling 'breathing gifs'. There are plenty there that you can time your breathing to, which helps relax you at the same time.

Try some relaxation techniques, such as visualising you're in a safe and peaceful place. You can imagine what it feels, smells, looks, hears like. Try to focus on that mental image, and take deep breaths slowly.

sit down close my eyes (personal preference : headphones with music) relax my mind clear my mind of thoughts and just focus on breathing

Take deep breaths. Try extending the in breath to flood increased levels of oxygen around your brain, which should help you to relax

Find your safe space, drink some water then slowly breath in through the nose and out through the mouth.

I know this can sound a bit dumb, but try to focus on your breathing, slow down, count to three as you inhale and again as you exhale. If you can, go wash yourself, maybe go outside to take some fresh air, put on relaxing music and try to think of something else. I sometimes breath inside of a plastic bag, a kind of tiny one, I dont really know if this one is good or bad, but it helps me focus on my breathing and such. Good luck, and have a great day!

Take deep breaths. I've found that it helps to inhale for 4 counts, hold for 7 counts, and release for 8 counts.