Chanting mantras, doing yoga and meditation, chakra meditation, fasting, penance, meditating upon a light, concentrating on breath and kundalini yoga are all tools that are used to keep the mind and inner complainers in control. These are merely tools until one attains Self Realization, they are not the ultimate goal. There are various health benefits of yoga however, a person will experience peace for the duration he remains engrossed in these practices and when they are over, he is back to where he started. Therefore, the mind never comes in his control. When the mind remains constantly under control, it can be considered cured.
In contrast, when you reach a state of absolute unaffectedness amidst all stresses within the thoughts, speech and actions you have achieved nirvikalp samadhi. Only a Gnani Purush is in such samadhi where no mental or physical circumstances can affect Him. He is the one who can place the true Meditation of the Self in your hands by gracing you with Knowledge of the Soul.
Let us learn more about yoga and meditation from the Gnani Purush Param Pujya Dadashri.