I partially agree with you. What angers me is the fact that your comment reads like it's a simple issue of will and everyone has just to decide on doing this. Not like it's kind of part of a lot of (not so crippling but still) disorders to sit there, do nothing and scream internally about not being able to do something about it. It's very hard work to change something about it. And your comment does not acknowledge this..

Sounds a bit like my dad saying 'walk it off' .

While I can speak first hand of the ruinous effects of ADHD medication and the need to approach them with care - even avoiding them if it's reasonable to do so, I disagree this one-size fits all approach - although I think it's applicable most of the time.