Desires, supported by belief and consistent thought, with spoken word and appropriate action, manifest into physical reality. The speed with which a desire manifests is affected by several factors. Alignment of the desire with the 'highest good' for all concerned. If the desire is in harmony with desires of other people, or the good of the whole, manifestation will be smoother. When the thoughts feelings and actions of the person desiring the end result are in alignment, the desired result manifests quicker and more certainly.
Any inner conflicts make manifesting more difficult.
Intensity of the desire. Enthusiasm towards the envisioned result brings the result more rapidly. One can use the frustration to find the interfering belief and to choose to let go of it or replace it. Faith in the desired outcome. When one is praying for another, there are additional factors that can affect the manifestation and timing of the desired outcome.