If given the opportunity to ruin another beings life out of jealousy, pettiness, insecurity, false intentions of good, revenge or just because you can, and choose other wise, that is how.
It's so easy to want to react harshly and abruptly with a wounded ego and a broken heart, and so much harder to choose love.
Social media makes this all that more easier. It's so easy to post something from or about someone's past to hold them down and keep them in your grasp but so hard to notice how everyone's path is similar and that it could easily happen to you.
Mentally, even the privileged have it tough.
Once you realize people's personal lives have nothing to do with you, you realize it's not your place to ruin things for them, that will happen naturally. If you're not there to motivate and support another being trying and climbing, then you have no place to try to correct them.
Stillness is growth, just look at the trees.