There are three kinds of sadhana to develop an unwavering mind. The first is the meena sadhana (like the fish). The second is mriga sadhana (like the animal), and the third is kurma sadhana (like the tortoise). Meena sadhana can be explained by remembering that fish can survive only in water. The moment it is taken out of water, it perishes. Similarly, meena sadhana is one which can be done only in solitude. If you sit in public, the sadhana will not be successful. Being unable to concentrate when one is mixed up with other people and being able to concentrate in solitude is called meena sadhana. The animal sadhana is that in which one can get concentration on the earth only. You cannot go elsewhere, say into water, and do it. As in this case, there are some people who can get concentration only when they are sitting in company and among others. They cannot concentrate in solitude. If they are alone, they begin to think of their family problems. On the other hand, the tortoise can live equally well either in water or on earth. So, if we say that one’s sadhana is like kurma sadhana, we mean that the person is able to concentrate irrespective of whether he is alone or is sitting in company among the others. If you develop equal-mindedness, it will lead to a steady mind.