There are many Mantharas of Ramayan to poison your mind. But dont try to become Kaikeyi and create Ramayan.
We always hear people poisoning minds against friends, relatives, parents or spouse.How strong a personality we are can create balance in the relationships. No lives are alike. All are different.Try to improvise lives of our near and dear ones with the feedback you receive from others. Alongside teach your dear ones to take the feedback positively too. But, do not punish them.
On the other side, do not become Dhratarashtra of Mahabharata and be the reason for the destruction of your near and dear ones. Only you can correct them. Rest of the world will only pass a comment, make fun of them, make advantage of their weakness or lead them to further ruins. If you genuinely care for them, keep your efforts on and on in making them better with time.