If you are tired, please rest. It doesn't mean you aren't strong or motivated or driven. It simply means you need to refuel your spirit in order to keep on giving and going.
Get out there and create something. Every one of us is capable of doing so.
Make sure your actions support your most desired goal and dream. If not, change your actions.
When it comes down to it, only you can choose to push through the self doubt.
Be still. The answers will come.