Seems to be escalating with DS8. (Younger sibling is 5.) Lots of blaming younger child as the bane of his existence and the root of all his behavioral issues (i.e., that lead to him getting in trouble). So, we not only have to manage this issue of not taking ownership of his own behavior (ex. striking out at sibling for being in his space) but have some concerns over helping him manage this relationship/jealousy/etc.

Any been-there, done that references or suggestions would be appreciated.