The heart is deceitful above all things, and desperately wicked: who can know it? I the Lord search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings. (Jeremiah 17:9 KJV)
As believers, it is imperative that we pay attention to ourselves and learn from God what things we should deny ourselves of such as sin, deeds of the flesh, and worldly things. Our emotions play a big part in our lives, but we must present ourselves before God on a daily basis which includes our emotions and how we feel about the things that we should let go of and forget. Just knowing the Word of God is not enough to help us to forget and let things go, but applying the Word of God to our hearts it what makes the difference in our walk with The Lord.
When trails and tests come our way we must put our trust and faith in God that He will bring us through and out like pure gold because our faith is in Him and not in ourselves. Let go of the things that are holding you down and put aside every weight so that we may not let the devil have his way. Our faith will be tried, but continue to press toward that prize and high calling of God that will bring us out and make us free.