Jesus asks:
"What is an idol?
Webster's Dictionary defines it as:

I'DOL, n. [L. idolum; Gr. form or to see.]

(Definition 3 and 4 are the relevant ones.)

3. A person loved and honored to adoration. The prince was the idol of the people.
4. Any thing on which we set our affections; that to which we indulge an excessive and sinful attachment. Little children, keep yourselves from idols. 1 John 5.

An idol is any thing which usurps the place of God in the hearts of his rational creatures.
So anything we place before God's Will for us is an idol! Anything excessively pursued may be an idol, depending why it is done.
Does this mean when we deliberately reject what God desires us to do we are an idolater in respect of the thing we have preferred before the Will of God and what we pursuing has become an idol?
So whatever we prefer to do in place of God's Will for us is an idol as we have set our heart to do and to ignore what God has asked us to do. Idolatry is a sin and every sin has as its components a lack of God's Love and bad stewardship - neglecting something God requires you to do - with something He has given you to look after for Him, even if it is only your mind or body."
Jesus hates idolaters so continue to be one at the peril of your eternal soul.