“快乐都是自找的”的英语怎么说？

楼上的，应该是“youself”吧，这里不应该用复数啊。
而“happiness”是不可数的，谓语动词要用单数。
应该是 All the happiness is gained by yourself.

You look for your own happiness.

All the happiness are gained by yourselves

happyiness is own yourself

Happy is yourself.