使用了 not... but... 并列结构来对比两种定义，强调了后半部分的转折意义。
Relatively speaking, everyone has the opportunity to be lucky, but it depends on whether you can firmly grasp the opportunity and strive wholeheartedly.
Things that benefit both yourself and others should definitely be done; things that harm you but benefit others should be carefully considered; things that harm others without benefiting you should never be done.
The strong in life are not those without troubles, but those who are able to free themselves from troubles earlier than others.
Life is like a dumpling. Whether you are dragged into the water, thrown in, or jump in yourself, if you have never navigated through the murky waters at least once in your life, you cannot be considered truly mature.
Civilization and politeness are the first 'business card' when entering society and also serve as the 'identity card' representing our image. Good academic performance does not necessarily guarantee a successful future; however, if we also cultivate the good habit of treating others with politeness and achieve true inner and outer cultivation, we add a significant weight to the scale of success.
All encounters in this world are reunions after a long separation, while every parting may mean we will never see each other again in this lifetime.
Your kindness is like a piece of candy to others—it is gone once eaten. Your bad behavior, however, is like a scar—it may remain permanently.
It is normal to encounter negative energy in life, but it is important to manage it so that it does not dominate your life. In the rest of your time, learn to calm your mood and fill yourself with positive energy.
相对而言，每个人都有获得幸运的机会，关键在于能否牢牢把握机遇并全力拼搏。
对于利己又利人的事，一定要去做；对于损己利人的事，需慎重考虑是否值得；对于损人不利己的事，坚决不能做。
生活中的强者，并非没有烦恼，而是比别人更早地从中解脱出来。
人生就像饺子，无论是被拖下水、扔下水，还是自己跳下水，如果一生中不曾经历一次“浑水”，就不算真正成熟。
文明礼貌是我们走向社会的第一张“名片”，也是代表自身形象的“身份证”。学习成绩优异并不完全意味着未来发展顺利，若能同时养成礼貌待人的好习惯，实现真正的内外兼修，就等于为成功的天平增加了一个重要砝码。
人世间所有的相遇，都是久别重逢，而每一次分开，可能今生便不再相见。
你的好，对别人而言像是一颗糖，吃完便没了；你的坏，对别人而言却像一个疤痕，可能永久存在。
生活中存在负能量是常态，但要注意调节，不要让其占据生活的上风。在其余时间里，要学会平复心情，让自己充满正能量。