How to find the thing you lost
If you lost something, try really hard to think, where did you have it last.
Did you put it somewhere safe? If so check there.
Also, try searching in your trouser pockets.
Quick Method
Often, when looking to find something, it is often in the last place you look. Therefore a lot of time can be saved simply by changing the order you search in, to ensure the first place you look, is the same as the last place. Try making a list of all the places you think the item could be, then simply look in the last one.
Warning
If you want to find something, you will first have to lose it.