A certain amount of natural fear is good. It keeps us safe.
It's been my experience that vizualisations are a great help in relaxing and knowing what you want to accomplish. For me, it's a great tool for "seeing" a final outcome.
My T and I used it quite intensively to get me past some of my problems. If it's a crutch, so be it. It helps get you through.
There's a song that has a line in it that has been instrumental for me to move ahead and that is "If I can see it, I can do it." It's very true!
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Psalm 119:105 Thy word is a lamp unto my feet, and a light unto my path.