Agree. There's no point in mastering something for the sake of mastering something; you reach mastery as just one more step in a long, rewarding journey. To ad

Agree. There's no point in mastering something for the sake of mastering something; you reach mastery as just one more step in a long, rewarding journey. To address the OP's question, you stay focused on X for a while and one day you will wake up to discover you think of X as an old, faithful friend. Stay focused on X for long enough and it will become like another appendage. Stay focused even longer and X will become like your skin.