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1. 正规投资者有定期投资的习惯
2. 多样化是长线成功的关键。
3. 聪明的投资者会平衡保守型和风险型高回报的投资组合。
4. 投资者用低买高卖来获得最大的回报。
5. 应定期审查和重新平衡投资组合。

• 明白自己在说什么
• 了解听众
• 选择时机
• 挑选风格
• 让他看起来不错
• 让听众参与
• 做倾听者
• 回应别人

• 点击发送按钮前先校对一遍。
• 检查一遍拼写检查，找到有可能是自动纠错没做对的地方。
• 用简单的格式。
• 尽可能少应用原文。
• 不要在网上侮辱别人，不要做喷子，除非你喜欢被喷，喜欢受虐。

ETC 原则，Easier To Change，更容易改变。设计原则全部符合 ETC。

DRY 原则，在一个系统中，每一处知识都必须单一、明确、权威地表达。

  3
/ \
9  20
/  \
15   7


Tips：

i 0 1 2 3 4 5 6 7
nums[i] 10 9 2 5 3 7 101 18
dp(i) 1 1 1 2 2 3 4 4

Coin Change 题目

### 解题思路

1. 有多种面额
2. 每种面额数量不限
3. 输出凑成面额的最少硬币个数
4. 没有可能输出 -1

For the past 33 years, I’ve looked in the mirror every morning and asked myself: “If today were the last day of my life, would I want to do what I am about to do today?” And whenever the answer has been “No” for too many days in a row, I know I need to change something.

Remembering that I’ll be dead soon is the most important tool I’ve encountered to help me make the big choices in life. Because almost everything — all external expectations, all pride, all fear of embarrassment or failure — these things just fall away in the face of death, leaving only what is truly important.

Remembering that you are going to die is the beat way I know to avoid the trap of thinking you have something to lose. You are already naked. There is no reason not to follow your heart.

About a year ago I was diagnosed with cancer. I had a scan at 7:30 in the morning, ant it clearly showed a tumor on my pancreas. I did not even know what a pancreas was. The doctors told me this was almost certainly a type of cancer that is incurable, and that I should expect to live no longer than three to six months.

My doctor advised me to go home and get my affairs in order, which is doctor’s code for prepare to die. It means to try and tell your kids everything. You thought you’d have the next 10 years to tell them in just a few months. It means to make sure everything is buttoned up so that it will be as easy as possible for your family.

It means to say your goodbyes.

### 刷新权限

1. 确认 Nginx 正常启动，这里要记录启动 Nginx 的用户供后续步骤使用，通常是 nginx

2. 确认 Nginx 的初始配置 /etc/nginx/nginx.conf 正确，特别注意 rootindex

3. 确认网站静态目录权限，一般情况文件夹 755、文件 644 就行，用户和用户组和步骤 1 保持一致，这里为 nginx。

4. 确认 SELinux 是否开启，不建议关闭 SELinux

—- 摘自《如果》