Can fire really burn away negative thoughts or just help me focus better?

Name: Diya Kapoor.

DOB: 15 July 1995.

Time: 11:10 AM.

Place: Chandigarh, India.

While meditating, I usually light a diya in front of me. I close my eyes, and it feels as the heat from the diya reaches me, I feel like all the worries and tensions are burning and yes! I imagine it too. So, is aura cleansing with fire a real energetic process or is it only symbolic?