“Above all, do not lose your desire to walk: Every day I walk myself into a state of well-being and walk away from every illness; I have walked myself into my best thoughts, and I know of no thought so burdensome that one cannot walk away from it.” — Søren Kierkegaard
Optimism makes you less likely to walk away while not actually increasing your chances of success. That means that being overly optimistic will make you stick to things longer that aren’t worthwhile. Better to be well calibrated. Life’s too short to spend your time on opportunities that are no longer worthwhile.
Be optimistic, you only stand to gain. You are as good as you believe you are, your beliefs will shape what you do and, ultimately, who you become. Pay attention to your thoughts, they are the First Movers of your journey through this path called ‘life’. You are not a helpless bystander, you have control. You are the main character of your story.