"To give up is a kind of wisdom"

"To give up is a kind of wisdom" (GW2 Gold). Once I read this sentence in a book, at the beginning, I do not understand it, but finally, I understand the significance in my life and work. In our life, our most foolish behavior is too obsessed with our own things, that is to say, we hold our things and do not want to give up. As a result, other people will not share with us when we held our things. No gain if we never give up, it is obvious truth. When you have six apples (Guild Wars2 Items), you should not eat them out, because if you eat six apples, you just only taste one taste – the taste of the apple. However, if you share five apples with your friends, on the surface, you lose five apples, but in fact, you get the personal friendship and goodwill of the five people. When they have other fruit, they will share with you, you will get a pear or an orange, and finally, maybe you will get six different fruits, six different taste, six different colors and six personal friendship. Therefore, we should learn how to use our own things to exchange more important things for us from other people (Guild Wars 2 Power Leveling). That is to say, though you give up five apples, you just get more things: more different fruits and personal friendship. So, to give up is a kind of wisdom, is it right?