How the voices in your head make you a better person

While in no way advocating the work of quasi-punk teen rockers Blink 182, I have always liked this lyric from their song "I Miss you":

Don't waste your time on me; You're already the voice inside my head.

I very much like this sentiment - when people become important to you, they become the voices you hear when your conscience is kicking in. Some examples:

• If I am planning on going out the house with some kind of daggy outfit and unbrushed hair, the voice I hear is my mother's going 'You can't leave the house like THAT!'. At which point I will brush my hair. But not change the outfit :) Nice to see I am still rebelling against my mother even when it's actually me.
• When being lazy about some kind of sewing project, and debating whether I should unpick and reattempt some annoying little detail that no-one else will know about but me - it's my Grandma Esme who provides the motivation to unpick the bloody thing and do it again. The funny thing is here, I will almost ALWAYS be happier when I do redo it.
• Until recently, it was my mother's voice again that appeared when I was about to do something stupid (e.g lick a sharp knife, resulting in my tongue being sliced off). But I realised only recently that this has actually changed to Husband-person rather than my mother... And his voice is more an unbelieving 'you have got to be kidding, are you really going to do that???' rather than a rather strident 'Don't do that!' that I would hear in my mother's version

Having given this some thought, it's also interesting to note what aspects of my conscience don't have any dubbing - for example, when it comes to work matters, I have my own standards and I know when I haven't met them (althought lately, I have decided that sometimes, you can let these slip and other people never know the difference) so I am happy to critise myself in this matter.

Who do you hear when you know you could (and should) do better?