Take a breath
Sounds easy right? Something we do 24/7 without even thinking about it. But sometimes we need to think about it, pause, take a moment and really breathe.
'One of the most overlooked - yet most effective - stress management tools is something we involuntarily carry with us throughout every second of the day: our breath. There is a good reason why we often hear people say "Keep breathing" ' - credit - Headspace
Calm, slow and steady breathing practice can help combat stress, anxiety, panic, and those moments when things can start to become overwhelming or you just need a minute.
There are some great apps out there - Headspace is something I've used a lot: https://www.headspace.com/meditation/breathing-exercises (give it a go - hit the link for a free trial!)
or search YouTube for breathing exercises/techniques,
An easy one to remember is box breathing: