5 Mistakes People Make When Tracking Blood Sugar (And How To Fix Them)
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5 Mistakes People Make When Tracking Blood Sugar (And How To Fix Them)

Tracking your blood sugar is one of the most important tools for managing diabetes.

But most people do it wrong.

And when you track wrong, you end up:

  • Feeling overwhelmed

  • Obsessing over every number

  • Giving up completely

Here are the 5 most common mistakes people make when tracking blood sugar—and how to fix them.

Mistake #1: Checking Too Often

The mistake:

You check your blood sugar 10 times a day.

Before breakfast.
 After breakfast.
 Before lunch.
 After lunch.
 Before dinner.
 After dinner.
 Before bed.
 At 2 AM.

And you’re exhausted.

Why it’s a problem:

Checking too often doesn’t give you better data.

It just gives you more anxiety.

Because blood sugar fluctuates constantly—even in people without diabetes.

Stress affects it.
 Sleep affects it.
 Hormones affect it.

So if you’re checking 10 times a day, you’re seeing every little fluctuation.

And you’ll drive yourself crazy trying to “fix” every spike.

The fix:

Check 2–3 times per day at consistent times.

Examples:

  • Fasting (first thing in the morning)

  • 2 hours after lunch

  • 2 hours after dinner

This gives you enough data to see patterns—without obsessing.

Mistake #2: Treating Every Reading Like A Grade

The mistake:

You check your blood sugar.

If it’s under 100: “A+! I’m doing great!”

If it’s over 140: “F. I failed.”

And when you get a “bad” number, you feel terrible about yourself.

Why it’s a problem:

Your blood sugar meter isn’t a report card.

It’s not grading you.

It’s giving you data.

And data isn’t good or bad.

It just IS.

The fix:

Stop judging individual readings.

Instead, ask:

“What does this tell me?”

High reading after pasta? That’s data. Maybe eat a smaller portion next time.

High reading after a stressful day? That’s data. Stress affects blood sugar.

Use the number to adjust—not to punish yourself.

Mistake #3: Not Writing It Down

The mistake:

You check your blood sugar, look at the number, and move on.

You don’t write it down.

You don’t track it.

Why it’s a problem:

If you’re not tracking, you can’t see patterns.

And patterns are what tell you what to adjust.

The fix:

Write down your numbers every time you check.

You can use:

  • A notebook

  • An app (MySugr, Glucose Buddy, etc.)

  • A simple spreadsheet

Include:

  • The number

  • The time

  • What you ate

  • How you felt (stressed, tired, energized, etc.)

After 7–14 days, look for patterns:

“Every time I eat rice, my number spikes to 180.”

“When I walk after dinner, my numbers are 20–30 points lower.”

“When I don’t sleep well, my fasting number is higher.”

That’s actionable data.

Mistake #4: Only Checking Fasting Blood Sugar

The mistake:

You only check your blood sugar first thing in the morning.

And you never check after meals.

Why it’s a problem:

Fasting blood sugar tells you ONE piece of the story.

But it doesn’t tell you how your body responds to food.

If you’re only checking fasting numbers, you might miss post-meal spikes.

The fix:

Check 2 hours after meals (at least a few times per week).

This tells you:

  • Which foods spike your blood sugar

  • Which meals keep you stable

  • Whether your portions are too large

You don’t have to check after every meal.

But check often enough to see patterns.

Mistake #5: Panicking Over One High Reading

The mistake:

You check your blood sugar and it’s 200.

You panic.

“I ruined everything. I’m failing.”

Why it’s a problem:

One high reading doesn’t mean you failed.

Blood sugar fluctuates.

Maybe you:

  • Ate more carbs than usual

  • Were stressed

  • Didn’t sleep well

  • Are getting sick

  • Forgot to walk after dinner

One reading doesn’t define your progress.

Trends do.

The fix:

Look at the trend—not the individual reading.

If your fasting blood sugar was 160 six months ago and it’s 130 now, that’s progress.

Even if 130 isn’t “perfect.”

If you have one reading of 200 but the rest of the week you’re between 110–140, you’re doing fine.

Don’t let one spike derail you.

The Right Way To Track Blood Sugar

Here’s the framework:

1. Check 2–3 times per day at consistent times

Not 10 times. Not once.

2–3 times.

2. Write it down every time

Track the number, the time, what you ate, and how you felt.

3. Look for patterns over 7–14 days

Don’t judge based on one day.

4. Ask “What changed?” when you see a spike

Use it as data—not as judgment.

5. Adjust based on trends (not individual readings)

If pasta always spikes your blood sugar, eat less of it or pair it with protein.

Your Turn

If you want the full framework for tracking your numbers without obsession—and using data to build a plan that works—get the book.

Get the book + audiobook for $7.95 →

— Chef Jeff

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