Your question is an interesting one. There are many individuals that have a dim light. In other words, the vitality in their body is operating at a very low frequency. Therefore, it is very difficult for them to feel their imagination, bring enthusiasm into their life and to have a clear head. This allows and supports them in manifesting what they desire, or what they may enjoy having in their lives.
T here are several important factors to discuss.
One being that the body is a temple. It is a vibration that needs nourishment. The body operates on a physical level and, yes, emotional attitudes and desires and spiritual energies fuel it, but it is a physical substance. So, therefore, it is very important to fuel the body on a physical level. When you do this, you will find that the physical level responds.