You alread know what needs to be done so why are you not doing it?
It doesn’t matter why. If you really want something then you will find a way to get it done. Stop whining, stop dreading, stop poor me-ing and just do it! The only way to get better at something is to actually do it. If you are scared you are not good enough then you must learn how to act in spite of the fear. Take ACTION!
If you are not taking action then you are not doing anything. If you are stationary then you are not moving forward. If you are not moving forward then you are not growing. If you are not growing then you need to take more action.
Action leads to results. Results strengthen your belief. Strengthening your beliefs leads you to take more action. Taking more action leads to better results. This is a positive feedback loop that will lead you to where you want to go.