Hi Sumit

Different things work for different people. However I can tell you what I did:

• Install a study timer in your phone. Move steadily from say 1 hour at a time to 3 hours at a time. In this pre decided time, you will not use the phone. Only when the timer rings, you can touch your phone.
• Uninstall all unnecessary apps like Facebook, Instagram, Snapchat.
• If you are too lazy to get up and pick your phone, switch it off and keep it on some other room or far away from you.