If it ain't broke, don't fix it

I suppose this applies to a few things in life, such as cupboard doors and biscuits. But the things of any complexity that ain't broke at least need maintaining, or they pretty will be. Your car may run nicely, but you have to look after it if you want it still to be going in a year or two. 

If your life ain't broke, that doesn't mean you can just chug along aimlessly, waiting for the next pothole to trip you up. Which is exactly what it will do if you don't look where your going. You have to look up, look ahead, keep setting yourself targets and dreams and ambitions and objectives.

When it come to your life i'd say that 'if it ain't broke, don;t fix it' is about defeatist as you can get. So lets hear no more of this silly, idle, leave thing-as-they-are talk. If it ain't broke, that's a great starting