Bad Practices Hurt Your Confidence?

You're feeling great all day, then you wreck a drill. After that, you start doubting yourself and thinking about how badly you messed up. Your confidence tanks and a good day turns into a bad one.
Why does your confidence fall apart? A great day of practice or a great start to a game turns into a downward spiral, because you constantly renegotiate your self-esteem based on how you're doing. That means you're self-critical after every few plays, deciding if you're good or bad at your sport and you really believe it.