Why did Heartfulness cause friend's anger on small things mood swings?

Mera dost Heartfulness shuru karne ke baad choti choti baaton par gussa karta hai. Pehle woh bahut shant tha. Uski patni ko lagta hai ki practice mein slowing down ki zaroorat uske dimaag ko resist kar rahi hai. My name is Anand from Ahmedabad, born on 4th April 1982. Time: 5:55 PM. Kya yeh mood swings anxiety ka sign hai?