Jack of all trades, master of none

The beginning of this saying (Jack of all trades) is often used as a complement for someone who is good at many things. But by adding “master of none,” the meaning changes to suggest a person who dabbles in many things is rarely great at any one thing. Interestingly, the meaning flips back to positive when you look at the original full proverb: “Jack of all trades, master of none, though oftentimes better than master of one.”