In order to maintain a friendship, do not avoid confrontation, but rather, embrace it.

If life was a piece of cake, it wouldn't be worth eating!

The saying the cherry on top is only a good metaphor if the person listening or reading actually likes cherries on top of their ice cream.

Do not kick people when they are down because you will surely fall right beside them.

The biggest idiot you will meet in life will be the person that thinks they know it all.

It is not wrong to strive to be better than a fellow human being. Nor is it wrong to desire to be better or even to feel like oneself is better than a fellow human being. What is wrong is to gloat in one's own virtue. Therefore, gloating in one's own virtue is not virtuous.