It is said that chanting one mantra is most effective, ekam kevalam mantrabhyasa-matram kuryat. It promotes the kind of single-mindedness (ekagra) necessary for successful meditation. This is so within one's own spiritual lineage, and even more so with mantras from entirely different traditions. The mixing of mantras from different traditions is not recommended.
This topic may seem frivolous, but it is an issue that weighs heavily on my mind. I have been a devotee for some time and have a physical deformity that I believe prevents me from becoming a better spokesperson for Krsna. This source of insecurity for me could be corrected by cosmetic surgery. If it were, I would feel better about my appearance and could more confidently and effectively serve Krsna. I know that this body is temporary, but I have a lot of years left in this world so I would like to know if it is wrong for a devotee to have cosmetic surgery? Sometimes certain material circumstances bother a devotee to the extent that he or she becomes preoccupied with them and distracted from spiritual practice. This seems to be the case in your situation. In these cases, it is usually best to make whatever adjustments are necessary so that one can get on with devotional service. My advice is to go ahead and do what you feel is best for your spiritual life. Cosmetic surgery is not wrong for a devotee if he or she truly has a higher purpose in mind.
Education is not a bad thing. Srila Prabhupada also asked some of his students to get a higher education for the sake of preaching, and it is very useful for those seeking employment for the sake of maintaining a Vaisnava family. His concern was that his disciples become devotees first and educated second. After all, there is a chance that in the process of becoming educated, one might lose sight of devotion and give intellect and education more credence than the means to realize ultimate reality. The only means of true knowing is self-sacrifice in devotion to God.
Why does a person choose to reincarnate into a body that becomes schizophrenic? I am doing a Ph.D. thesis on this topic and am looking for opinions on the topic of reincarnating into difficult situations.
The "choice" to reincarnate is not one in which the soul consciously chooses a particular body. Indeed, reincarnation is the soul's predicament, stemming from its ignorance. We choose to behave in certain ways in relation to material nature and material nature responds accordingly. No one would consciously choose to take birth as a schizophrenic or in any other difficult situation, but people do act in ways that causes material nature to respond to their actions with such a birth. Reaction to our actions is what the law of karma is all about. The choices we make in this life determine the results we receive in the next.
Bhagavad-gita teaches that people should follow their natures and worship Krsna in ways that are harmonious with their natures. How necessary is it to go against one's nature for the sake of adhering to the social norms accepted in devotee society? An emphasis on restrictions pushes away people who might otherwise be inclined toward devotional life, so why emphasize rules like vegetarianism?
Following one's nature is an important instruction inasmuch as it is done in such a way that it leads to changing one's nature. When I say changing one's nature, I am referring to changing one's mentality, qualities, and activities of a lower nature to those of a higher nature. Ultimately, spiritual life is about change. In the third chapter of the Bhagavad-gita, Sri Krsna emphasizes that people should follow their nature (sreyan sva-dharmo) with regard to prescribed activities. However, this instruction runs counter to his conclusion, stated in chapter eighteen, where he tells us to forego everything including our nature (sarva dharman parityaja) for the sake of spiritual advancement.
Though at times he spoke about serving meat to induce the British to hear about Krsna, Bhaktisiddhanta Saraswati Thakura never put those words into practice. Both he and Srila Bhaktivedanta Swami Prabhupada insisted that their disciples eat a vegetarian diet of foods offered to Krsna. Rather than draw the masses, they wanted to create a new class of brahmana Vaisnavas who would exemplify a standard of behavior and practice that was conducive to the culture of Krsna consciousness. They did not expect that the entire religious world would follow the standards that they set for their disciples.
...Srila Prabhupada did make some concessions in introducing Krsna consciousness to people in western countries. Regarding vegetarianism, he was careful to make sure the diet was rich and delicious by any standard so that his followers would feel no need to return to a carnivorous diet. He was also well aware of the statement his guru had made about serving meat and mentioned it to his disciples a number of times. Although he never did so, it is conceivable that he might have agreed to employ this reasoning at some point in the larger context of encouraging a greater number of people to embrace Sri Krsna's teaching in the Gita.
After all, Krsna himself speaks of different standards in the Gita. For example, in Bg. 9.28 he speaks of pure devotion when he tells Arjuna to offer him a fruit, flower, leaf, or water in devotion with pure (sattvic/prayatatmanah) standards. In the following verse he speaks of a lower standard when he says, "Whatever you eat, whatever you offer and give away, and whatever austerities you perform, do that as an offering unto me." Krsna may not eat meat, but in this verse he says that if you do, still you should acknowledge God by offering the food to him in some way. Krsna does not say he will accept food that is not offered with sattvic standards, but that the devotion present in such offerings will purify that person even if the offering is not perfect in terms of ingredients. Offering to Krsna what one is in a habit of doing will eventually bring one to the standard of pure devotion, where one does only things that are pleasing to Krsna. In this regard, Srila Prabhupada said that drunkards who consistently remember to acknowledge Krsna for the taste and effects of their wine would in time give up that wine and become devotees.
Once one attains the highest level of pure devotion, there are no rules, because despite appearances, all of the activities of pure souls are motivated by the love of Krsna. Life in the lila of Krsna is entirely different from mundane life, and it transcends the life of the practitioner as well. If some devotees such as Pandava Bhima eat meat in Krsna lila, this is otherworldly and not something to reference as a standard for serious practitioners.
Otherwise, in general, if people are too addicted to meat eating, at the very least they should adjust their diet to the extent that their eating causes less suffering and is more environmentally sensitive. Throughout the world, socially and spiritually conscious people are already moving in this direction.