First of all, you must understand, happiness means sense gratification, happiness. You can understand it very easily. If I get some nice foodstuff, because I satisfy my taste, palate, I feel happiness, "Oh, very nice food I am eating." Similarly, you take any of your sense organs, when it is satisfied according to the sense object, it is called happiness. So the sum and substance of happiness is to satisfy the senses. But Kṛṣṇa says that sukham ātyantikam: the supermost happiness can be achieved not by these senses, but atīndriya. Atīndriya means transcendental senses.
Just like at the present moment our senses are gross material senses. But there is another sense . . . not another sense; this sense. This is covered sense. Suppose you will try . . . you will be able to understand. Now, I want to touch some soft place to enjoy the sense of this hand, touch sense. But if the hand is covered with gloves, I cannot enjoy that sense so nicely. You can easily understand. The sense is there, but if it is artificially covered, then even the facility is there, I cannot enjoy the sense perfectly. Similarly, we have got our senses, but our senses are now covered by this material body.