Read The Spoon Theory.

Right, you lot, especially those of you with disabling, energy-sapping illnesses – I can’t recommend The Spoon Theory highly enough.

Ditto you buggers who fail to get your heads round illnesses that you can’t actually see – maybe it’ll help you understand that someone who doesn’t look ill actually can be extremely ill, and hopefully realise what dorks you are! Though I don’t doubt that some are beyond redemption.