The Bible has much to say about idolatry. We have found it in 1 Corinthians 8-10 at SPC. It is a form of spiritual adultery, it is infidelity to God, it is a loss of one’s true love.
We must not be deceived. It is not about bowing down to statues in a temple, having figurines on your mantlepiece or pictures on the wall, though it could involve those. It is about giving your heart to another. A person, a possession, an idea, an ambition, a feeling, a plan, nostalgia, a football team. Even a regret. Each can rule our hearts when on the face of it we submit to God.
Knowing your own heart is a difficult thing. We need God’s help:
Search me, O God, and know my heart!
Try me and know my thoughts!
And see if there be any grievous way in me,
and lead me in the way everlasting!
Psalm 139:23,24 (ESV)
Doggie's Breakfast 
I wanted to comment on this before – very excellent reminder. It is so easy to fall into idolatry and we do it all the time. Often it is with those things God has blessed us with as you note here. Thanks for the reminder!