How do I sage my room correctly and what prayers should I say?

Name: Meera. DOB: 26 June 1995. POB: Pune, India. TOB: 10:20 AM.

I live in a tiny studio apartment, so I don’t need to cleanse an entire house—just my room, which is my bedroom, living space, and office all in one. The energy here feels stagnant lately, especially with me working from home so much. I bought white sage, but I don’t know where to start. Should I begin at the door or the corners? How long should it burn? And is there a prayer I should say while doing it?