What it means
Gopal means the one who tends cows. It's Krishna's childhood name, the little cowherd of Gokul.
Where it comes from
In homes where a Laddu Gopal is kept, this name is said many times a day: waking him, bathing him, offering his food. The mood is called vatsalya, loving God as you would your own child. On Janmashtami night you'll hear it in almost every house.
How to chant it
Sit before Laddu Gopal with a little makhan and mishri and chant. Here, affection counts for more than method.
When: During morning seva, and at midnight on Janmashtami.
Try it now
The japa counter opens with this mantra selected and keeps count for you.
Questions people ask
Of course. Any picture of Krishna, or simply holding him in mind, is enough.