Your perspective on fear, as outlined, delves deeply into the human psyche, revealing that fear often stems not from our immediate reality but from the projections of our mind. This understanding is profound and sheds light on the essence of human suffering – the disconnection from the present moment and the entanglement in the web of our thoughts.

To address and overcome this state of fear, one must cultivate a practice of mindfulness and presence. By anchoring oneself in the present moment, acknowledging the transient nature of thoughts and fears, one can begin to disentangle from the grip of these imaginary projections. This approach does not deny the utility of the mind or its capacities for memory and imagination but suggests a balanced engagement with it.

Rooting oneself in reality, as you mentioned, is indeed the antidote to fear. This grounding can be achieved through various practices such as meditation, mindful breathing, or simply the conscious observation of one's immediate environment and sensory experiences. These practices help in recognizing that most fears are not reflections of our current reality but are rather unfounded anticipations of the future or residues of the past.

In essence, the journey towards overcoming fear involves a reorientation of one's relationship with the mind, fostering an ability to distinguish between useful thoughts and those that sow the seeds of fear. By doing so, we can navigate life with a sense of clarity, presence, and resilience, free from the shackles of non-existent fears.