Our Mind and Heart not walk together. Mind says I need this; Heart says I like or love this. And we got crazy about worldly things. 

     Question - why Mind and Heart goes together? Because Mind have thoughts and Heart have attentions. Hence, if you want to stop this craziness, You have to unite your Heart and Mind. 

     Jesus was not after the worldly things because His Heart and Mind was unite for God alone. And that He teaches us to Love God will You all Heart, Mind and Soul (Matthew 22:37). So my dear friend don't be crazy about the things, which are unworthy to God our Lord Jesus Christ.