Oil - An analogy

I heard this from my dad! 

There was this guy, who wanted to oil his head. He made a small cup with his palm and poured oil into it and filled a handful. However, while lifting the oil bottle off he spilled one drop on the same arm of the hand he had cupped the oil. This irritated him, he wanted to utilize that one drop and chose to rub that drop on his palm on his head, but alas! he lost the oil in his hand. 

He could’ve just let go of that single drop! Or maybe kept the bottle away and used the other hand to dab the single drop. 

Sometimes it’s just wise to let go off the single drop to keep the rest of the oil.