Whenever you engage in a practice, as mentioned here, for example the recitation of Manis, but actually in any activity, you should do it with the power of benevolence. This is a key point because there are those who make a mistake here: when they do a practice, their main thought is that if they do the recitation of Manis, they believe it will help them, and thereby help them develop some degree of personal attainment. It is inwardly directed, but again, it is only self-cherishing. Dharma practice, if done in this way can even reinforce self-cherishing, therefore you must avoid practicing in this way. Approach any activity with the thought that you are not just doing it for yourself, but rather, you do it explicitly for others. Your mind opens up completely, and you say mantras for all living beings, which automatically includes yourself. This is the benevolent attitude, the power of benevolence. The power of benevolence must inform all your deeds. It must be done with consistency, and constancy.
– Garchen Rinpoche