Here is something to think about:
One of the most successful businessmen I have ever had the pleasure to talk to, Bob Block, credits his success in great part to his practice of developing five ideas per day to improve his businesses.
This is a practice he developed when he was just starting out as a salesperson in a mid-western state. He would think of five ideas, every single day, for improving his business.
While he admits that most of the ideas were worthless (about 95% of them), the few that were valuable were fairly priceless.