Rose, Thorn, Bud is a technique for identifying things as positive, negative, or having potential.

Members of the Boy Scouts of America are taught to be thorough, methodical, and analytical about each situation they encounter. In turn, scouts are routinely encouraged to identify one positive experience (Rose), one negative experience (Thorn), and one new goal or insight (Bud).

This is a simple and versatile method to employ. You can frame activities, observations or opinions as positive, negative, or having potential.