Your behind the scenes efforts are appreciated. Without you, a lot of people would miss out on something special.
Motivation is not an endless stream that goes on forever. It's a muscle that you have to exercise on a daily basis. Just as a battery needs to be recharged, so does your motivation. Don't get upset or frustrated with yourself when your motivation runs low - you just need to recharge it. It's the same for all of us.
You've got a lot of things to do. Are you sure that you can handle them all? If you can't delegate, you might be working overtime.