DS is 8, autistic & adhd. He really struggles to cope with not being able to have something he wants. For example, he sees something in a shop and really wants it. I explain we can't get it and the reason (usually it's too expensive or not something we need). I've really tried to help him understand about the value of money and to also be fair and say if he really wants something, we can save or he can get a treat at the end of the week for getting to school on time, being kind to brother etc. We've had so many conversations about not being able to have everything we want. He just fixates on things though & says "it's all I can think about". I don't know what else to do. I want him to be happy but without needing stuff to make him happy!