"The key to freedom is obedience. The more obedient we are, the more freedom we have."    

                                                                Boyd K. Packer

Obedience   Freedom

I think that this quote means that if you act obedient, and have obedience that it will lead you to freedom and happiness. For example, someone who is obedient to everyone and also chooses the right will gain freedom then or in the future.