Question

How a person try to put down another when that person is succeeding in his her life.

Answer 1

they are the various ways by which people are trying to put down on the person who is in his or her success but the truth is the person who is digging the hole for the another person is himself Patang into that pit

Answer 2

people who are jealous of other people success never succeed in liefe.
they dont do hard work 
they do various malpractices they try to put you down by insulting u in front of people or by taking credit of the work that you have done
they also on the last moment say that i will continue the work and then they showcase what you have done but if u keep working hard without any shortcut one day u will be most successful no matter whatever comes in ur way