求翻译：有一些东西错过了，就一辈子错过了。人是会变的，守住一个不变的承诺，却守不住一颗善变的心。 　　有时候执着是一种负担，放弃是一种解脱，人没有完美，幸福没有一百分，知道自己没有能力一次拥有那么多，也没有权要求那么多，否则苦了自己，也为难了对方。 　是什么意思？

Something missed and forever missed. 　　Man can change, keeping a constant commitment, but was unable to keep a fickle heart. 　Sometimes persistence is a burden, give up is a free, no perfect happiness no 100 min, know that they cannot afford to have so much at once, also did not have the right to require so much, otherwise suffer themselves, has also been embarrassed at each other.