How to keep the mind focused?

Question: I was very happy to come across the Question and answer section, wherein people can pour out their problems and even more touched by your patient listening and answers.
Although I have been doing Japa fairly regularly, I have not been able to go beyond one cycle at night as I fall asleep and beyond 4 cycles in the morning, mainly because of lack of time. I get up at 5 in morning and sit from about 5:15 till 5:50 or so. At night, I usually wait till all my family members have gone to sleep, which can be a bit late, 11:30 or 12. Kindly read my problems and suggest how to overcome them.
I have problem in keeping the mind focused on Sri Thakur’s image in my heart. No matter, how many times I bring the mind back, it wanders once again. I am persevering, but do despair at times. I find it easier to concentrate on the Mantra Japa, but not both.
Secondly, I am unable to hold my posture still while meditating/Dhyana. My shoulders slump forward and I have to sit straight again after a while. I am also now, unable to sit cross-legged and find it easier if I sat on a chair. Would this be alright?
Thirdly, If I try to increase the number of times I recite the given mantra, I find that I am not pronouncing it properly even in my mind which makes me feel guilty. So, I go back to repeating it slowly and clearly, but lesser number of times.
I read in “Mahapurush Maharaj as we saw him” that, Japa and Dhyana ultimately culminate in the same, which I find to be true to some extent. During the times I am doing Japa and keeping Sri Thakur’s image in my mind, the Japa is forgotten. The mind however, soon wanders and after this is recognized, I go back to Japa.
When I am alone, I sing a few Bhajans. At that time, when I think of the meaning of the Bhajan, tears flow, my throat chokes and I am unable to sing in tune any further. Is this just an overemotional reaction, which I should try to overcome?

Answer: These are the common problems of all the spiritual aspirants. It is the nature of mind to go outward. And it is only the spiritual aspirants who try to bring it under control and turn it inward. The methods you are adopting are perfectly in order. Just recollect the advice given by Swami Brahmanandaji to Swami Yatishwaranandaji. Three instructions – Struggle, Struggle, Struggle. Follow the instructions given by your Guru.
The emotional aspects have to be kept under restrain lest the devotion should not end up in emotionalism.