There's two techniques that can help you believe in yourself and your goals
An AFFIRMATION is a positive statement you repeat over and over.
eg I am a runner.
Say it out loud several times a day and you will come to believe it
VISUALISATION draws on your imagination to create positive images. Our central nervous system doesn't distinguish between real and imagined events, it simply sees and accepts all images as if they are real. So what you see in your mind's eye can strongly influence your beliefs and achievements.
Picture yourself as a strong runner and your body and mind will respond as though your are one.
