Take a bath and wear clean clothes. Then, do Dhyana (meditate) followed by Sankalpa (take a pledge that you would sincerely observe the fast). Seek Lord Shiva's blessings. Maintain celibacy on the day of fasting. Do not consume alcohol or tobacco is strictly prohibited. Consumption of wheat, rice, pulses is not recommended. But those observing the fast from sunrise to sunset can have a complete meal at night. Nonetheless, it would be best if food grains are avoided. Avoid milk, leafy vegetables, brinjal, onion, garlic, spicy foods and meat. Perform Shiva puja and/or Rudrabhishek, chant Mantras dedicated to Lord Shiva and participate in charity activities.