花开成疾思念成灾
[huā kāi chéng jí sī niàn chéng zāi]
Flowers bloom quickly; thoughts lead to disasters. The blooming refers metaphorically to rapid growth (could be good), but illnesses (flower diseases) follow swiftly, paralleling quick-moving thoughts causing troubles or emotional storms. The second part 'thinking disaster' also means overthinking can cause psychological stress.