有意栽花花不发，无心插柳柳成荫 yǒuyìzāihuāhuābùfāwúxīnchāliǔliǔchéngyīn plans often fail but luck can bring success
intentional efforts may fail while unexpected actions lead to success; literally: planting flowers with care but they do not bloom, while sticks of willow planted without thought grow into shade
