How can I deal with past assumptions when they come up, trust my own work, and feel secure in who I am and in my decision?

I have been manifesting my SP, and I have seen very good movement many times. However, when the silence creeps in, I start feeling afraid. I begin questioning my own work and wonder whether I am doing enough, whether it is working, or whether I am on the right path.

I am persisting and doing well right now, but old thoughts and past circumstances still sometimes come up in my mind. At times, I become so scared that my body literally starts shaking. When this happens, I question whether I am doing things correctly.

Sometimes, I also feel insecure because of the circumstances and the silence in the 3D. I want to stay firm in my decision, feel secure in who I am, and trust my own work, just as everyone says. I genuinely want to achieve that state.

I also want to maintain a clean mental diet for myself and my desire.