"如果不需要分享，那就独自承担悲欢." 这句话用英语如何翻译？？

If there is no need for sharing, I shall bear sadness and happiness by myself.

If sharing is not a necessity, I will then keep happiness and sadness to only myself.

(如果分享并不是一种需要，那我就只将悲欢留给我一人）

If share is unnecessary, accept the happiness and sadness by your own.