There are a number of prayers that can be used to confess your sins to God. Here is one, I forget where I found it, and you can insert any of the particulars that you wish to seek help overcoming.
O Lord our God, good and merciful, I acknowledge all my sins which I have committed every day of my life, in thought, word and deed; in body and soul alike. I am heartily sorry that I have ever offended thee, and I sincerely repent; with tears I humbly pray thee, O Lord: of thy mercy forgive me all my past transgressions and absolve me from them. I firmly resolve, with the help of Thy Grace, to amend my way of life and to sin no more; that I may walk in the way of the righteous and offer praise and glory to the Name of the Father, Son, and Holy Spirit. Amen.