One thing the Bible teaches us, is yes, stopping the old way of life, dying to the sinful nature, and letting go of sin is absolutely something we need to do, we don't merely stop. We must replace.
Take a look at Paul's words to Titus and to us today. Notice how we should replace one way of life, one way of thinking, one pattern of belief with something better.
So when you recognize there's something in your life you need to stop, that's good. Now, what can you replace it with? What will you do instead? Fill the void in your life with the Spirit of God.
For the grace of God has appeared that offers salvation to all people. It teaches us to say "No" to ungodliness and worldly passions, and to live self-controlled, upright and godly lives in this present age, while we wait for the blessed hope —the appearing of the glory of our great God and Savior, Jesus Christ.