Tantric Way of Worship
In Tantric Pooja, actually deity does not come from outside and sit in the idol and receive pooja but is the one which is inside the Sadhak (worshipper, who does the pooja). Deity or Shakti is installed (during prana prathista - installing vital air) into the idol or yantra (mystic diagram) by taking it from the right nostril (pingala nadi), then worshipped. After visarjana(disposal), diety is again taken into the body of the sadhak through left nostril (Ida nadi).
Pooja or ritualistic worship of the deity is a very important part of Tantra-Sadhana. It forms a part of purascarana also.
In any pooja, the preliminary processes include sankalpa or religious resolve and ceremonial purification of all the items involved in it as the asana or seat, the vessels, and the flowers.Bhootapasarana or driving away all the evil spirits that may obstruct the pooja is another important item. Pranayama or regulation of the mind through the control of breath,bhootashuddi or purifying the elements that compose the body of the worshipper (five elements – earth, water, space, fire, air), nyasas or placing different seed letters (beejakshara) in different parts of the body, dhyana, meditation on the god, and then prana prathista (only in case if it is not installed – in temples deity is already installed but in case of house every day awahana and visarjana should be done – installation and disposal).
However the cardinal part of the pooja is the “upacharas” or ways of ritual service. In the shortest mode of pooja they are five: gandha (sandal paste), pushpa (flowers), dhoopa (incense), deepa (lighted lamp), and naivedya (food). After all these rituals deity should be disposed off.
Symptoms of doing Japa without a Guru or not following instructions properly.
1. Headaches. It will be whole day long that doesn't stop even with strong pain killers.
2. Fever.
3. Not getting sleep but only burning eyes.
4. Laziness. If you today you had a very good concentration and did 1008 (10 rounds) of japa, tomorrow you will have lot of laziness, couldn't get up early, or whatever reason japa will be stopped and it may continue to until a week or month.
For above all problems remedy is Guru, proper guru can handle these problems and can guide and remove all the obstacles for his spiritual practices.