ChatGPT custom instructions are two text fields that shape every response you get. The first tells ChatGPT about you: your role, industry, what you work on. The second tells it how to respond: tone, format, length, things to avoid. On aidowith.me, the Practical Prompts route includes a step-by-step process for writing both fields so they work together. Most people leave these blank or write something vague like "be helpful." That's why their outputs are generic. The route gives you templates based on your job function (marketing, HR, sales, operations) and shows you how to test and refine them. You'll spend about 15 minutes writing your instructions and immediately notice the difference in output quality. Every new chat inherits your settings, so you stop repeating context. One setup session saves you hours of re-explaining who you are and what you need.
Last updated: April 2026
The Problem and the Fix
Without a route
- Every new ChatGPT chat starts from zero because it doesn't remember your context
- You paste the same background info into every conversation and it still misses the mark
- Output tone and format are inconsistent, so you spend 10 minutes editing every response
With aidowith.me
- Custom instructions written in 15 minutes that shape every future ChatGPT response
- Templates matched to your role: marketing, HR, sales, ops, and more
- Consistent tone and format across every chat without repeating yourself
Who Builds This With AI
Marketers
Content, campaigns, and briefs done in hours instead of days.
Sales & BizDev
Prep calls, draft outreach, research prospects in minutes.
Managers & Leads
Reports, presentations, and team comms handled faster.
How It Works
Write your 'About Me' field
Define your role, industry, typical tasks, and what kind of output you need. The route provides fill-in templates for common job functions.
Write your 'Response Preferences' field
Set tone, format rules, length preferences, and things to avoid. AI helps you test different versions and see how output changes.
Test and refine
Run your usual prompts with the new instructions active. Compare output quality before and after. Tweak until every response lands right.
Set up your ChatGPT custom instructions
15 minutes of setup. Better AI output on every conversation from now on.
Start This Route →What You Walk Away With
Write your 'About Me' field
Write your 'Response Preferences' field
Test and refine
Consistent tone and format across every chat without repeating yourself
"I set up custom instructions in one session. Now ChatGPT writes in my brand voice without me asking. Biggest ROI of anything I've done with AI."- Content strategist, B2B SaaS company
Questions
Click your profile icon in the bottom left, then select 'Customize ChatGPT' (previously called Custom Instructions). You'll see two text fields with character limits. The route walks you through exactly what to write in each one based on your job function and goals. Both free and Plus accounts have access to this feature.
Yes. Custom instructions are available on the free tier. You get the same two fields with the same character limits. The only difference is that GPT-4o access may be limited on free accounts, but the instructions apply regardless of which model you use. Set them up once and they work everywhere.
ChatGPT allows one set of active instructions at a time, but you can toggle them on and off or swap between saved versions. The route shows you how to write flexible instructions that handle multiple task types, plus how to save role-specific variants you can paste in when you switch contexts.