...worrying won't prevent bad things from happening, it will only make you live through them twice - once in your mind and once in reality. So if you're going to imagine the future anyway, you lose nothing by choosing the version that brings youpeace.
If you're going to overthink, then overthink the positives. Overthink the best outcome. Overthink how good this life can be. Overthink how peaceful it will feel if things slowly, quietly work out. It's okay to be afraid of disappointment, but consider this:...
Mi antiguo yo ha sido crucificado con Cristo. Ya no vivo yo, sino que Cristo vive en mí. Así que vivo en este cuerpo terrenal confiando en el Hijo de Dios, quien me amó y se entregó a sí mismo por mí.