沧浪之水清兮，可以濯我缨；沧浪之水浊兮，可以濯我足。https://felixhan.dev/https://felixhan.dev/blog/2026-03-31-builder-guilt/https://felixhan.dev/blog/2026-03-31-builder-guilt/Why Programmers Don’t Always Need to Build Their Own ToolsTue, 31 Mar 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-05-3-foucs-framework/https://felixhan.dev/blog/2026-05-3-foucs-framework/How to apply Jobs's radical reduction, Musk's micro-time-boxing, and systems thinking to eliminate cognitive overload and master deep work.Sat, 30 May 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-06-06-weekly-review/https://felixhan.dev/blog/2026-06-06-weekly-review/A job-hunt week where the finished tasks were the easy ones and the main tasks went untouched — and what that taught me about deciding instead of keeping every door open.Sat, 06 Jun 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-06-16-weekly-review/https://felixhan.dev/blog/2026-06-16-weekly-review/Last week a project sat untouched because I kept avoiding it. This week the same project finally moved — not by trying harder, but by removing every decision standing in front of it.Tue, 16 Jun 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-06-28-ai-tools-strategist/https://felixhan.dev/blog/2026-06-28-ai-tools-strategist/Building a tool to tell me which AI tool to use — and why an ordinary person needs one.Sun, 28 Jun 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-07-06-learning-to-ship/https://felixhan.dev/blog/2026-07-06-learning-to-ship/I built an agent to tell me what to study next. Its first answer was: build this.Mon, 06 Jul 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-07-07-how-i-work-with-ai/https://felixhan.dev/blog/2026-07-07-how-i-work-with-ai/I was using AI every day and none of it accumulated. The fix was three layers — and an inventory that catches me lying to myself.Tue, 07 Jul 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-07-11-weekly-review/https://felixhan.dev/blog/2026-07-11-weekly-review/Two goals: apply daily and ship the agent project. I went 1-for-7 on applications — and the reason wasn't procrastination, it was a gate I built on purpose.Sat, 11 Jul 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-07-18-weekly-review/https://felixhan.dev/blog/2026-07-18-weekly-review/Three applications, a cloud deploy, and a screening video in spoken English. The thing that broke the daily-apply streak wasn't a real dependency — it was a belief wearing one's clothes.Sat, 18 Jul 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-08-09-weekly-review/https://felixhan.dev/blog/2026-08-09-weekly-review/Three weeks without a review, an interview question I couldn't answer, and the discovery that I'd built the answer weeks earlier. The failure wasn't memory. It was valuation.Sun, 09 Aug 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-08-10-nineteen-months-and-a-stranger/https://felixhan.dev/blog/2026-08-10-nineteen-months-and-a-stranger/I wrote down the right diagnosis twice in nineteen months and nothing moved. Then a stranger who had seen none of it said it back to me. Here is what actually moves it — and the receipt showing I still haven't done it.Mon, 10 Aug 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-08-12-say-it-in-your-first-language/https://felixhan.dev/blog/2026-08-12-say-it-in-your-first-language/I measured 66% silence in my spoken English and prescribed a fix. The next day I tried the same explanation in Chinese and failed there too — which killed the fix, not confirmed it.Wed, 12 Aug 2026 00:00:00 GMThttps://felixhan.dev/blog/2026-09-09-a-few-maybes-and-a-fort/https://felixhan.dev/blog/2026-09-09-a-few-maybes-and-a-fort/Starting with an idea that interests me, then building tools to understand what happens when I speak inside a game.Wed, 09 Sep 2026 00:00:00 GMT