Guru chandala Yoga is not the problem. These planets are widely separated and occupy different Bhavas in the Bhava chart. Nakshatra lords of both are different. Both are not active together till now.
Your chart has a debilitated Moon occupying the Kalapurusha’s 8th house of secrets. It is Vargottama. It is also the lord of the house of Sukha from Marriage. Both Moon and the current antardasa lord Rahu have Saturn as their nakshatra lord. Both Saturn and Rahu influence the Moon. This is what causing your mental agonies.
Practising a little pranayama and meditation and Shanti for Moon and Rahu will help.