有很多，以下是一些例子：
开头：
1. Let's face it, we all need a little help sometimes.
2. I've been there before, and I know what it's like.
3. We've all had our fair share of mistakes and heartbreaks.
4. There's no denying that life can be challenging at times.
5. It's no secret that we all have our ups and downs in life.
结尾：
1. I hope you can find the strength to overcome whatever challenges you're facing.
2. Remember, you're never alone in this journey we call life.
3. May your heart always be filled with the light of positivity and may your path lead you to happiness and success.
4. Keep your head up high and remember that tomorrow is a new day filled with endless possibilities.
5. With every challenge comes an opportunity for growth and learning, so never give up on yourself.

1、failureteachessuccess。成功是失败之母。

2、lovemakesonefitforanywork。热爱令人胜任任何工作。

3、experienceisthenameeveryonegivestotheirmistakes。经验是人们加给自己所犯错误的名称。

4、sciencetothehumanmindiswhatairorwateristothebody。科学之于人类思想正如水或空气之于身体。

5、virtueandatradearethebestportionforchildren。德行和一门技能是给孩子最好的遗产。

6、alifewithoutafriendisalifewithoutsun。人生没有朋友，犹如生活没有阳光。

英语书信表达中，开头常用:How are you doing these days?/How are you getting on with your study/work?结尾常用:In a word ;In short ;In brief"总之"