Don't let the sadness of your past and the fear of your future ruin the happiness of your present.

问题描述:

Don't let the sadness of your past and the fear of your future ruin the happiness of your present.

不要让过去的悲痛和将来的恐惧毁了你现在的幸福.这是字面意思.
不必为过往悲伤亦无需为未来畏惧,把握现在就是幸福的.这是意译.