Possible Clues:

• 'I' problem
• It may be evident in some git showing off
• ... I'm holding that to be self-promotion
• It's all my eye, by the sound of it
• Cockney chap acquired 'is money by self-seeking
• Selfishness gets 'moi' into trouble
• 'e made 'is millions looking out for number one
• Not thinking of others
• It's not through being selfless the 'e acquired 'is thousand
• Self-centredness: somehow it goes to my head