The best service you can do is to keep your thoughts on God. Keep God in mind every minute.
Love is the strongest medicine.
Keep God in your heart like you keep money in the bank.
Total truth is necessary. You must live by what you say.
Whatever may be guru - he may be a lunatic or a common person. Once you have accepted him, he is the lord of lords.
It's better to see God in everything than to try to figure it out.