Lose or loose temper that creates negative energy and blocks creative thought. Convert the negative energy of stress to a positive energy is the answer. That way instead of going to sleep with problems, you go to sleep with peace and a clear mind, and wake up with solutions. But stress and worry are choices. Your mind has thoughts and they either show up as stress and worry, or you harness the same energy, and convert the thoughts into resolve.
Most people lose sleep over matters of unfinished business, money and passion.
When money is not tight, one focuses on success and eventually fulfillment. I'm always prepared for the new day, and I get my best ideas in the morning - jogging or in the shower. I keep a legal pad by my bedside. And the last thing I do before I go to bed, is write down everything I need to do or problems I need to solve. Once I write everything down, my mind is clear.