Final answer:
In the provided context, 'grappling' refers to the struggle to overcome symbolic and literal barriers, representing a profound engagement with life's challenges.
Step-by-step explanation:
The word grappling as used in paragraph 24 of the text most closely means 'To struggle to overcome'. This meaning is derived from the context of achieving a heightened perspective where physical barriers such as borders and fences lose their significance. The difficulty of this struggle, both literal and metaphorical, suggests a deep engagement with obstacles that are not easily resolved, akin to a struggle for mental or emotional ground, rather than physical combat or simply holding onto someone or something.