Sadhak Pitta is a sub-dosha of Pitta (fire) and is located in the heart.
It controls one’s emotions, desires, decisiveness, and spirituality.
An imbalance in Sadhak Pitta makes a person feel more pressure, potentially leading to overworking, thereby leading to situations that may cause a lack of sleep.
To help reduce this, one may wish to drink ash gourd or sugar cane juice after dinner, eat five soaked almonds at bedtime or drink 100 ml of lukewarm almond milk at bedtime.
source: express.co.uk