How do crystals assist my chakras and what is the process behind their energy work?

Namaste, Sneha. That "stinging sensation" you felt is a common bio-electric reaction. The Process: The core of crystal healing is Entrainment and Piezoelectricity. Crystals have a perfectly repeating atomic lattice—they are the most stable form of matter in the universe. Humans, conversely, are a chaotic mix of liquid, gas, and solid, with frequencies that change with every thought. The Frequency Logic: When a stable crystal (Frequency A) is placed on a human energy center (Frequency B), the lower or more erratic frequency will naturally rise or stabilize to match the higher, more stable one. The "stinging" you felt was likely Resistance—the movement of a "blocked" energetic knot being forced to vibrate at a higher speed by the crystal. Astrology & Houses: In your Kundli, your houses represent different life areas. Chakras are the "gateways" to these houses. Using a crystal is like cleaning the "lens" of a projector so the "movie" (your life) becomes clearer.