Roomba

When someone asks you for feedback first ask what kind they want. Clarifying this upfront will save time. Assuming they want direct (more harsh-leaning) feedback might cause a tailspin. 

People who are taking action and bumping into stuff are the ones who are eager for growth. Helping someone who is at a standstill can be like pushing a rope. Those who are not taking action will likely eat up your time. 

Don't allow it. Find the action takers who are in motion.

It's worth noting… The floor gets vacuumed because the Roomba isn't afraid of feedback.