Visitor: What sins are we to turn from there are so many of them?
Response: Thanks for your inquiry. As for what sins to turn from, fist and foremost, by grace, you must turn from trusting in your own righteousness and turn to trusting in Christ and and His righteousness alone. That means salvation comes to those who are stripped of all self-sufficiency and trust only in the sufficiency of Christ to save them. This is the basis or foundation for repenting of all other sin because, in it, one recognizes that all repentance is impossible apart from Christ and the Spirit working repentance in them. Once a person, through the illumination of the Spirit, realizes that they have zero ability to repent on their own, that they are without strength, impotent of themselves to repent, then and only then do they begin to faithfully understand Christ's salvation as revealed in the Scriptures. We must first lose all hope in ourselves THEN when our hope is in Christ all things are possible. The new birth means God's seed abides in a person and obeying God's commands are no longer burdensome (1 John 5:2-4).
With this in mind, I recommend the following helpful meditation by J. C. Ryle: