"I've learned all that there is to learn about the job in the last six months"
fantastic, they should make you CIO straight away.
Firstly you never stop learning, you don't think something like the move to Windows 8 or BYOD will give you new, marketable skills, revitalise that job satisfaction and give you a wider understanding of the user before you move onwards and upwards.
Secondly don't confuse Ambition with Ability
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