“In everything give thanks; for this is the will of God in Christ Jesus for you.” 1 Thessalonians 5:18
The definition of effusive is expressing feelings of gratitude, pleasure, or approval in an unrestrained or heartfelt manner.

You cannot find this spiritual value through your fleshly condition. It is impossible. The feelings of gratitude will always relate to good things taking place in your life.
We have to look to Jesus as a role model for exhibiting an effusive attitude in His life which was never related to circumstances. Jesus appreciated God for who He was and did not require blessings from God to create unrestrained gratitude.
The effusive attitude of a believer will originate in the work of the Cross. It is understanding the sacrifice of Jesus and the efficacy to a believer.
The gift of eternal life is living with Jesus forever and sharing in His life through the embodiment of His Spirit. The life of Jesus is alive in you and He desires to fill you with unspeakable joy.
There is a direct relationship between the joy of God and unbelief. If you fall into unbelief you are grieving the Holy Spirit and will lose the fullness of the joy of God
The joy of God and is not related in any way to worldly actions. It is understanding Jesus lives above the world and has authority over all things.
When you experience the Living Christ the things of the world will slowly fade away as you dwell in the greatness and glory of God. You gain a new appreciation and joy for your Savior which will abide with you through all the ups and downs of life.
Your joy will be heartfelt reflecting the love of God!