What splits your attention is usually something good, which is why it never occurs to anyone to cut it.
Two legitimate claims drawing on one current will both run at partial strength, and partial strength is what most people mistake for their ceiling. Nothing wicked has to be present for a life to underperform.
Half attention yields half feeling, half feeling yields hesitant action, and hesitant action compounds into sincere intentions and thin results. Undistracted attention to the Lord is a condition that gets built rather than promised, and building it starts with naming the good thing quietly drawing current and deciding what it may have. Leave that undecided and it gets decided anyway, by whatever pulls hardest on a given day.