Do you want to start winning at Magic the Gathering? Are you worried about your strategies? Do you need a little help to get started with drafting? Do you feel stagnant, stuck in a rut, and ready for a change? Are you terrified of wasting tons of money and still losing? If you keep doing what you've always done, you'll never start winning.
Too little self-confidence may lead to depression and anxiety disorders, but too much may also lead to clinical narcissism. Hence, having a healthy level of confidence is of utmost importance in order to keep your mental and emotional health balanced.