Do you ever talk to yourself? I do all the time, especially when I'm running or lifting. Self doubt can destroy everything we do. Have a strategy in mind when this happens. Talk to yourself. I know this sounds goofy, but it works. Oddly enough, when I talk to myself I never use the first person "I" but always the second person "you." Examples:
- You got this.
- You can go another mile.
- You are strong enough.
- You are only an hour away from a big juicy steak.
Sometimes getting behind yourself is the best thing you can do.