The 1st house (Lagan) represents the mind, the physical body, and the self. Rahu is the planet of confusion, illusion, and dark energy.
When Rahu sits in the 1st house, it constantly clouds the person's mind, making them confused about their life path and prone to bad decisions. Dr. Sharma provides a powerful, practical remedy for this:
First, keep moving forward and making your own path ("raaste banata ja"), no matter how confusing life gets. Second, to clear the dark, smoky energy of Rahu from your aura, you must regularly bathe using a few drops of holy water (Gangajal) in your bathwater. This instantly purifies the mind and removes Rahu's illusions.