Idolatry is defined as adoration, reverence, veneration, or fetishism.
I adore my cats.
I venerate some people. Or, it looks like I do because there are some people who I avoid because of their backward thinking.
I have a fetish for certain foods and means of healing.
Is this idolatry?
I think idolatry comes into play when I take what is a benefit and focus on it so much that I lose sight of new ideas. Yesterdays benefit then becomes todays hindrance.
The method that healed me yesterday might not work today, therefore I want to be open to new ideas. The openness disallows an unconscious idolatry of yesterdays method.
This idea of newness can be found throughout literature:“Behold, the days are coming, declares the Lord, when I will make a new covenant with the house of Israel and the house of Judah, (Jer. 31)