The power of enthusiasm.
To be enthusiastic is to have a lively interest or a feeling of excitement. Enthusiasm fro within is what matters. What comes deep from within created by good self esteem, powerful self confidence, good focus and aims. That kind of enthusiasm knowing you gonna get the job well done, knowing you have done and will do the job well.
Enthusiasm help you get motivated to get the job well done and to get bids or projects as people can see it in you and know how you love doing the job.
Knowledge is power but enthusiasm pulls the switch.