Try this calming and relaxing practice that can help you to let go of your worries, brings more clarity and enable you to watch your mind as a observer.
Mantra: Aum Hari Aum
Bhagavad gita Quote: The Blessed Lord said: O mighty-armed son of Kunti, it is undoubtedly very difficult to curb the restless mind, but it is possible by constant practice and by detachment. – Ch 6, 35