投资：just keep buying Investing: Just Keep Buying
关于投资，我目前的核心策略很简单：
选择纳斯达克100、标普500、黄金这三类资产，长期定投即可。
大跌也买，大涨也买，just keep buying。
把它当成一个后台自动运行的任务，不需要天天盯盘，也不需要被短期涨跌牵着情绪走。真正值得投入时间和注意力的地方，应该是那些能持续提高赚钱能力的事情。
至于什么时候卖出，我只看三个条件：
第一，为了改善生活质量。
前提是这件事已经经过非常严肃的思考，确实能让生活变得更好，而非被一时情绪驱动。
第二，出现了更值得持有的标的。
前提是自己认真研究过，确认它在长期收益、风险承受和个人认知范围内，确实优于当前持有的资产。
第三，投资组合需要重新配比。
这种情况下，本质是资产之间的调整和转换，而非单纯把资产变成现金。
最近一个被刷新的认知是：
贷款投资的前提，是你未来有相对确定的收入。
因为贷款投资，本质上是在预支未来的钱。只有当这笔未来收入具备较高确定性时，它才勉强可以被视为"未来的自己能够承担的钱"。
如果未来收入本身并不确定，那这笔钱就不能被轻易当作可以提前支配的资源。
所以，任何贷款行为都必须想清楚、算明白，尤其不能在兴奋、焦虑、贪婪或害怕错过的时候做决定。
My current core investing strategy is simple:
Pick three assets — Nasdaq 100, S&P 500, and gold — and dollar-cost average into them for the long run.
Buy on the way down. Buy on the way up. Just keep buying.
Treat it as a background task that runs by itself. No need to watch the market every day, no need to let short-term swings yank your emotions around. What actually deserves your time and attention is the work that keeps growing your ability to make money.
As for when to sell, I only consider three conditions:
First, to improve quality of life.
The premise is that this is something you have thought through very seriously, something that will genuinely make your life better — not a decision driven by a passing mood.
Second, a better holding has emerged.
The premise is that you have done the research yourself and confirmed that, within your long-term return outlook, your risk tolerance, and your circle of competence, this new asset is truly superior to what you currently hold.
Third, the portfolio needs rebalancing.
In this case, what's really happening is a shift and conversion between assets, not turning assets into cash.
One belief I've recently updated:
The premise of investing with borrowed money is having reasonably certain future income.
Because investing on debt is, at its core, spending money your future self hasn't earned yet. Only when that future income carries high enough certainty can it even loosely be considered "money your future self can afford."
If future income itself is uncertain, that money cannot casually be treated as a resource available for early use.
So any decision to borrow must be thought through and calculated clearly — and above all, never made when you are excited, anxious, greedy, or afraid of missing out.