Pain and suffering are actually reciprocal with happiness, but many people magnify their inner feelings. If you focus only on the pain, nothing seems worth it. He only focuses on the happiness, so it all seems worth it.
痛苦和快乐本是对等的,可很多人都会放大内心的部分感受。你放大了痛苦,一切便不值得;他放大了快乐,所以就值得。