June 30, 2026

Why Thinking About Your Diet Makes You Anxious

Have you noticed how thinking about changing your diet can trigger anxiety?

Much of this depends on self-efficacy—your belief in your ability to succeed at a specific task. This isn’t general self-confidence.

It’s tied to the exact goal you’re pursuing. You might feel confident giving a presentation but doubtful about sticking to an eating plan.

Both feelings can exist in the same person.

Self-efficacy matters because it determines whether you start, how hard you work, and how long you persist when things get difficult.

People with low self-efficacy see challenges as threats to avoid. They give up quickly when obstacles arise.

People with high self-efficacy set more ambitious goals and push through setbacks.

The good news: self-efficacy isn’t fixed.

One of the most reliable ways to build it is through mastery experiences—repeated successes that prove to yourself you can do this.

Each time you follow through on an intention, your belief in your ability grows. That belief makes the next success easier.

Over time, you can set and accomplish larger goals.

A practical application:

If eating healthier feels overwhelming, your goals may be too large for your current self-efficacy. Start smaller. Instead of overhauling every meal, commit to eating one piece of fruit before breakfast for a week. Succeed at that. Then build from there.

Confidence comes from competence, not the other way around.

—Keith

KeithAHerman.com

If you have questions or topics you’d like me to address in future emails, you can reply to this message. I read and respond personally to all replies.

Keith A. Herman is the founder of the Expert Diet Project, an initiative dedicated to correcting health misinformation by spotlighting the advice of the real experts.

The Eat Like an Expert Newsletter, the Health & Well-Being Journal, and Keith’s upcoming book, Eat Like an Expert, are all part of the Expert Diet Project. The book is scheduled for release in 2026.

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