I'm always too easily prone to stuff (it's a problem I've always had for years) and here's a few examples:
If someone asks me a question like "Do you believe in global warming", "What's your opinion on George W. Bush", "Do you like Family Guy", or "Do you like school", I always easily freeze up on those questions by not answering.
If it's some peer pressure-type thing, I (sometimes) easily do it.
If it's some extra-credit type schoolwork, I easily choose and do it.
If someone asks me to do something or go somewhere with them, I either do it or once again freeze up on that question.
If you wanna know what does "freeze up" parts mean, it means I always have trouble saying "yes" or "no" to people because I either don't want people upset at me or their feelings getting hurt (trust me, I've faced a ton of those problems at school last year (and possibly, this year, too).