l have the same problem.l think find a English speaker and talk more.many people say it's uesful.last But not the least.learn new words every day

Hi Sumit! Here is a free podcast you may find helpful: https://itunes.apple.com/us/podcast/online-accent-reduction-for/id357661927?mt=2 There are also plenty of resources online if you Google "accent reduction for learners of English". Good luck!