You should avoid non-vegetarian food, chilly and masala foods, reduce your salt intake and take sattvic diet - fresh and purely vegetarian.
Adopt the following steps:
Kriya - Agnisaar Kriya
Asanas - Shashankasana, Yogamudrasana, Paschhimottanasana, Kurmaasana, Gharbasana.
Pranayama - Naadi Shodhana, Brahmri, Sheetali, Sheetkari, Kapal bhati, Ujjayi Pranayama
Mudra - Mahamudra, Akash mudra, Yoni mudra
Bandha- Moolabandha and mahabandha
Relaxation and Meditation - Deep Relaxation Technique / Progressive Relaxation Technique / Yoga Nidra.