THE PROBLEM IS FOR EVERY 尝试, THERE WILL BE A PRICE TO PAY, MONEY, TIME , OPPORTUNITY LOSE, AND ETC. AND, YOU WILL NEVER KNOW YOU NEXT ENDEAVOR WILL SUCCEED OR NOT....OTHERWISE, THERE WON'T BE SO CALLED 一将功成万骨枯, BEHIND EVERY STEVE JOBS, THERE COULD BE TENS OF THOUSAND FAILED MISERABLY.