My son, as of late, has become increasingly emotional. We know something is bothering him, but he tells us nothing is wrong. When we do get him to admit that he has a concern, he becomes frustrated and breaks down in tears. Many times, it is over something trivial, like deciding what to eat. Is this normal? He seems stuck. He is so easily frustrated when he tries to explain a problem, and he has anxiety. He constantly apologizes for everything, and this seems to make him feel worse. Is this just a phase?