There are some events that you can influence by making intelligent choices and by taking decisive action. There are other events and situations that are completely out of your control.
You can do your very best with those situations that are under your control.
And you can adapt and adjust to those situations over which you have little or no influence.
The foolish actions of others can leave you hopelessly frustrated if you allow them to do so. Keep in mind, however, that there's nothing to be gained by working yourself into a knot of frustration and resentment.
Instead, accept whatever comes your way and commit yourself to finding the positive, generous sense of purpose, even when conditions are less than ideal.