If you think about it how many times have you done something without really thinking? Whether someone shared it with you so long ago you've forgotten who, or you've come up with it yourself, think "would anyone else know this?"
My first tip:
How do you easily get out an eggshell that has fallen into your egg? Way back, I used to chase it around with a fork or a spoon, and when that didn't work I'd plunge my fingers in, until one day someone said to me; "use the eggshell itself." It works! :)