Micromastery- doing a small thing well- is a good way to acknowledge and honour one of the many selves of which you are composed. No one is just one thing, one leviathan-like unity. We are like multiple strands- not even woven, and our life is the fight between them for the honour of carrying the little monkey that is climbing up...
The strands compete; sometimes one strand tries to strangle another. You get obsessed with one thing and let everything slide- but another strand of self will re-assert and condemn the 'addiction'. The secret of the traditonally wise was to try your best to integrate all the strands, weave them together into one rope that pulls in one direction.
But prior to integration you need to find some stability. You need some distance on your mutliple selves. This doesn't come from navel gazing- it comes from honouring each self with recognition. It doesn't have to be much. For example, if you have a military self don't join the army and kill your artistic self- simply wear a uniform for a day or two every so often. If you have an artistic self draw and frame a picture every month. The rest of the time you can run your business- which may be boring at times but is honouring your ambitious worldly self.
Micromastery- doing an eskimo roll, juggling, making a perfect omelette is a way to instantly access the self involved with each task. Once accessed and honoured (chef self is rewarded by everyone praising his great omelette) you can rest assured that self won't try and sabotage your life.
Because most people spend a lot of emotional energy putting out fires started by their competing selves.