畏首畏尾 [- shǒu wèi wěi]be overcautious; be fainthearted; fear both the beginning and the end — excessive fear; be filled with misgivings and fear(s); be frightened all over; be full of misgivings; be scared from beginning to end; be timid:
•¶ 我们要放手地任用和提拔他们， 不要畏首畏尾。 We should boldly give them work and promote them and not be overcautious.