Although this depends upon what is making you upset or affecting you and needs to be looked on at carefully, regarding which I'll suggest you have a chat with one of our experts here.
At the same time, an essential and easy way to relax in case you feel overwhelmed at a point of time is to practice deep breathing. This helps in easing yourself out to a point where you can stop and think clearly.
It is important to know that this may not work in every case and some issues require further awareness to get relaxed from.
If you feel there is anything you want to talk about, you can jump right in my messages!