If you want something very much, don’t let it go.
Fight for it, fight as though your life depended on it.
If your life doesn’t depend on it, you probably don’t need it.
If you don’t wish to fight, you probably don’t want it enough.
If you don’t fight for it, you probably don’t deserve it.

Fight until you decide there is nothing more to be done. That’s stopping, not giving up.
You give up when there are more avenues to explore, when there are things to do and you decide you don’t want to try any more.
You stop when there is nothing more to be done, when you have exhausted all options, when you have tried your best. Like the fox who stopped jumping for the grapes. He knew nothing more could be done. It was time to stop.

When you give up, you lose; when you stop, you move on.