What ever you lack to use, you loose

There is a fundamental principle in life that I found can be applied to anything. It goes like this:

"What ever you lack to use, you loose."

For example if you don't nurture your couple. There will come a point at which your significant other will leave. If you stop doing a craft or a sport. You will loose it. Let go of your house or your car. It will decay. Don`t speack a laguage, you will loose most of it.

Anything. This principle applies.

Make sure you take good care of things, people and knowledge that you like, love or that is of some use to you.