Take a chill pill, you can also use a chilled drink to calm your nerves down because whatever is meant to be will be with or without your help.
Everything that happens to us especially ones that are out of our control and did not happen as a result of our carelessness or fault is predestined, as such there is little or nothing we or anyone can do to avert those situations. We can maybe prevent those things from happening when it is supposed to happen, but we can not stop it from happening.
So, the earlier we learn to take a chill pill and relax especially when we realize that some things are just beyond our control, not because we can not handle them, but because they are just beyond our control and strength the better for us.
Whatever is going to happen, is going to happen, whether we accept it or not, a Supreme Being is governing this world and as such, He makes things happen in His own time and how He wants it.
Yeah, maybe there are things that we can control, they are within our power to control even though He has the final say, but they are things that we just can not help because it was written before we were born, so you don't have to beat yourself up when things don't work the way you wish them to or want them to.
So, let yourself some space, pat yourself on the back if you have to, encourage yourself if you have to, congratulate yourself, thump yourself up or a handshake, and relax especially if you have put in your best because whatever is meant to happen will happen, don't beat yourself because somethings are not in our control, they are meant to be.