Dr. Rishi Rohit Sharma provides a brilliant, practical remedy for Ketu in the 3rd house.
The 3rd house rules communication, and Ketu here often causes unnecessary arguments, harsh words, and misunderstandings with others. To counter this, Dr. Sharma advises keeping a specific object: a pen with three coins attached to it. The number 3 activates the positive energy of the house, while the pen channels communication constructively.
Furthermore, behaviorally, instead of getting angry during an argument, he advises using your intellect to simply confuse your opponent ("usko confuse kiya kar"). Deflect the negative energy rather than absorbing it.