I can relate and appreciate the "sibling" rivalry to an extent. I'm the youngest of four (three boys, one girl) and three of us have always got along well together. My middle brother is a talented person however, he was spoilt rotten by my Mum and had always managed to wrap her around his finger (in a very bad way). It took the rest of us years to realise how insecure and jealous he really is of the rest of us getting along so well...but his problem is "we're doing things my way...or not at all. I don't care what you think, say or do" - the three of us have bent over backwards to accommodate him...but unfortunately he never learns. Everybody in the wider family can't stand him and avoid him at all costs...he lacks self-awareness and emotional intelligence. In contrast my sister can talk Dad around any situation but she does it for the good of Dad and for the benefit of the whole family....but then she works as a professional carer and so has a completely different mindset to my brother....it's all so sad.