nourish - To provide food or other substances necessary for growth, health, and good condition; also to support or promote the development of something (like ideas, feelings, or relationships).

She worked hard to nourish her creativity by painting every day.
hint - A small or subtle piece of advice, suggestion, or information, often given to help someone understand something or solve a problem.

After a difficult 30 minutes in front of the group, my manager gave me a hint on how to improve my presentation.