I’ve tried being as encouraging as possible, but nothing seems to work. And now I’m worried his younger siblings will follow in his footsteps

My 15-year-old son is refusing to take responsibility for anything and, although he’s capable, he does not show any interest in his education. I am worried about him and his future.

Sometimes, I feel bad and tell him that he’s trying his best, but soon I start feeling concerned again. At other times, I feel angry with him for the way he is behaving.