We can help them by helping them cope with every day problems no matter how large they may seem in the moment and teach them during these situations as they occur.
One way to do this is to help them to understand the size of their problem that they are faced with and to put into concrete terms that helps them understand and cope with it, therefore, regulating themselves and preparing them for the next time they are faced with a "problem" or obstacle.
Here's a great short video (under 5 minutes) to help kids understand this concept of "size of the problem" and identify how the reaction should match the size of the problem.
We can model this for our kids and students by talking out loud about how we deal with and cope with problems that they can understand (age appropriate terms of course) and model this for them.
Size of the Problem Video