Life is a circle,a complete circle no matter how long it is.You are meant to be loved during this circle so that you can always have hopes.I have two definations for a "perfect day":one is busy week days on which you can bury yourself into work,the other one is kind of the opposite of the first kind which is days that you spend to enjoy your one-day's circle life by doing whatever you want to do without thinking about all your pressure of work,it is just like sunrises and sunsets that accompany us everyday.
No google translate.Hope it helps.BTW,I agree with the word above,cuz I am experiencing those recently and can feel the same way.