句子包含一个that引导的宾语从句，从句中“defined by struggle and effort”作为后置定语修饰youth，结构紧凑。
At the beginning of 20xx, let us pick up a pen and paper to write down the goals we aim to achieve this year. Whether it is a new skill to master or a destination to visit, list them in detail and then spare no effort to make them happen. If you want to learn to drive, do not fear the scorching sun; if you wish to travel to Lijiang, do not worry about the significant expenses; if you aim to learn English, do not be intimidated by the countless words before you. No one succeeds without effort; only through persistent hard work can we add brilliance to our lives.
In 20xx, whenever you feel like slacking off, remember to push yourself harder. Recall the essential goals you set for the year and strive to achieve them. I believe that only a youth defined by struggle and effort is truly worth cherishing and reminiscing about.
在20xx年的伊始，让我们拿起纸和笔，将今年计划完成的事项一一记录在案。无论是想要掌握的新技能，还是向往的远方目的地，都应详细列举，然后全力以赴地去实现它们。若想学车，便不必畏惧烈日当头的酷暑；若想去丽江，便不必顾虑路途遥远或花费巨大；若想学英语，便不必害怕无数单词在眼前跳跃。没有人能躺着成功，唯有持之以恒的努力，才能为我们的人生增添光彩。
在20xx年，当你又想偷懒懈怠时，请记得为自己“加把火”，回顾今年定下的必须完成的目标，然后努力将其实现。我想，只有经过奋斗的青春，才是最值得怀念与回味的。
"Idealism innovation and passion are the three great characteristics of youth"
"The passage of time is inevitable, but the loss of youth is a regrettable mistake."
"What is a young heart? It is having freshness and passion in youth."
"To preserve youth, maintain a youthful mindset and exercise regularly."
"Youth is precious; make sure to do what you love most."