As per Hindu and astrology and Tantric beliefs Sri Yantra is a powerful mystical diagram that people worship to enhance their lives. Derived from a Sanskrit word it is basically a spiritual illustration. It is available in various forms as per your requirement and the simplest form is a triangle. This process of worshipping this form is called Yantra Healing.
The different forms of Yantras available as per Hindu astrology are Laxmi Yantra &Kuber Yantra,Bhairavi Yantra, Sri Yantra, Surya Yantra, Mangal Yantra, Shani Yantra, Rahu Yantra, Vastu Yantra, and Maha Yantra. Popular among the above is Kuber Yantra which is used for accumulation of wealth, improvement in job, and business growth.
Among all the above forms of yantra, Surya Yantra is considered most powerful and used to invoke favourable opportunities in life.