Hello. All 4 children are mine with the same dad. Normally things are fine but this holidays it is tough because DS1 and DS2 'left' home but are back now until September. Extremely selfish behaviour from all four; gaming/ watching until the early hours; demanding that I do things; complaining aggressively about the lack of food; leaving a trail of mess and being rude and unpleasant including swearing horribly at my face routinely. The house is disgusting. It is depressing. It is as if all four of them being at home together have mutated into grown up versions of themselves when they were toddlers. Is this normal? How much should I be disciplining them. How can I discipline them? They have no appreciation whatsoever of what I do for them. I am saddened by their extraordinary selfishness. DS1 is 21 DS2 is 18 DS3 is 18 and DD is 16. I want to run away.