The $20/month Claude plan is enough.
But only if you stop making these 17 mistakes:
1: You upload PDFs raw. One page = 3,000 tokens.
Fix: Paste the text into a Google doc. Download as .md format. Under 200 tokens.
2: You build files inside Cowork too early.
Fix: Plan in Chat first. Move to Cowork only when you know exactly what you want.
3: You write 500-word prompts that reload.
Fix: Write 29 words instead: "I want to [task] to [goal]. Ask me questions using AskUserQuestion."
4: You say "redo the whole thing" to correct part 3.
Fix: "Only redo section 3. Keep everything else. No commentary. Just the output."
5: You send 3 separate messages for 3 tasks.
Fix: One message, three tasks. "Summarize this, list the points, suggest a headline."
6: You type "No, I meant," stacking on the history.
Fix: Click 'Edit' on your original message. Fix it. Regenerate. History replaced, not added.
7: You use the Opus model for a grammar check.
Fix: Sonnet or Haiku for quick tasks. Save Opus + Extended Thinking for deep work.
8: You dump 50 files into Cowork "just in case."
Fix: Only include what this task needs. Zero folders for quick tasks like email drafts.
9: You never restart fresh & keep having long chats.
Fix: Every 15-20 messages → summarize, copy the brief, start a fresh session.
10: You keep 3 topics in 1 chat. Claude re-reads all.
Fix: New topic = new chat. Always. Dead context is dead tokens.
11: Your about-me file is 22,000 words (too long).
Fix: Trim to under 2,000 words. End sessions with "Write a session-notes.md."
Paste my .md file prompt: https://t.co/j5fEzSGxlT
12: You leave search & connectors on by default.
Fix: Default everything off. Turn features on per task, not per account.
13: You upload the same PDF to 5 different chats.
Fix: Use Projects. Upload once. Every chat inside references it without re-burning tokens.
14: You skip Personal Preferences & waste setup.
Fix: Settings → Personal Preferences. Set your tone and style once. It persists forever.
15: You rewrite prompts from scratch every time.
Fix: Keep a prompt library. Same structure, swap the variable. Stable prompts get cached.
16: You manually run the same report every week.
Fix: Use /schedule. "Every Monday at 7am, create my weekly briefing." Wake up to a finished doc.
17: You use Claude for things it can't do.
Fix: Know your tools. Images → Gemini.
Real-time search → Grok.
Stop burning tokens on dead ends.
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To download all of my Claude infographics:
Step 1. Go to https://t.co/psB7XxAv8w.
Step 2. Subscribe for free. Don't pay anything.
Step 3. Open my welcome email (most skip this).
Step 4. Hit the automatic reply button inside.
Step 5. Download my infographics from my Notion.
Bonus. Enjoy my best copy-paste prompts, too.
Claude Code から EDINET DB を使う記事を公開しました。
https://t.co/VkPjyP0oLm
ターミナルで「7203を分析して」と打つだけで、企業検索→財務取得→業界比較→Markdownレポートまで自動です。
cron で毎日19時に「今日決算発表のあった企業のレポート出して」を回すと、毎日勝手にレポートが溜まります。たぶん一番省エネな決算分析。
「50 TOP PIZZA ASIA PACIFIC 2026」
日本のランクイン11店
1位 RistoPizza By Napoli Sta Ca(東京)
2位 The Pizza Bar On 38th(東京)
17位 La Tripletta(東京)
19位 Pizzeria Da Tigre(大阪)
21位 Pizza Strada(東京)
23位 L’INSIEME(東京)
32位 MASSIMOTTAVIO(東京)
35位 Pizza Marumo(東京)
36位 Pizzeria Da Ciro(京都)
49位 TONCINI(苫小牧)