In the interest of time, I have decided to be brief, and let two quotes say it all today.
The first, from Nicholas Murray Butler, states "Optimism is the foundation of courage."
The second, from Usman B. Asif, says "Fear is a darkroom where negatives develop."
So, turn the light on and don't let those negative thoughts develop. Take courage and keep hope in your mind, freeing it to be creative and peaceful. Continue to dare to dream.