Some great truths have been brought to my attention in a study called Quieting a Noisy Soul...
The body can be a stumbling block to the heart. While thoughts of the heart may change body chemistry--and therefore, feelings-no body chemistry generates thoughts. Thoughts always originate in the heart.
"For from within, out of the heart of men, proceed the evil thoughts, fornications, thefts, murders, adulteries," Mark 7:21
"We are destroying speculations and every lofty thing raised up against the knowledge of God, and we are taking every thought captive to the obedience of Christ," 2 Cor. 10:5
"For the word of God is living and active and sharper than any two-edged sword, and piercing as far as the division of soul and spirit, of both joints and marrow, and able to judge the thoughts and intentions of the heart." Hebrews 4:12
Emotions are like warning lights on the dashboard of our cars; they indicate there is a problem "under the hood"--with our thoughts. We are responsible for our thoughts!!
Anxiety is a subset of the broader emotion of fear. Fear is sinful (and not helpful) when in our unbelief we allow anxiety to stop us from fulfilling biblical responsibilities. Anxiety is the result of responding to the uncertainties of life with a wrong view of God.
Our noisy souls will rest from negative emotions--including fear--when our choices and our thoughts reflect that we are living in the reality of a God Who is more than enough for us. ~Jim Berg