I found the fourth point particularly helpful and convicting.
4. Engage culture redemptively. Strive to connect your theological reflections regarding culture to redemption. We can redemptively engage culture in two ways: practically and positionally. To practically redeem, identify what is broken, what is in need of redemption, and take restorative action. Ask yourself questions like "How can I bring the gospel to bear on this issue?" or "How can I restore, forgive, or reconcile in this situation?" For example, if you come to the conviction that abortion is ugly and immoral, think about how you can help those who are suffering from the devastating affects of abortion. Don't just debate others. Volunteer at a crisis pregnancy center. Learn how to counsel mothers. Don't become self-righteous and inactive; practice your cultural convictions. Live them out redemptively.
Our practice should flow from our position in Christ. Our actions ought to reveal our redeemed identity, not form our identity. Consider the danger of mistaking your newly-formed habits for who you are. For instance, do you think of yourself now as an environmentalist or as a citizen of Zion with an environmental conscience? Do you draw significance from being a "pro-lifer" or from being new creation in Christ Jesus? Ask yourself, "Am I confusing my practice with my position?" or "Am I finding my significance in what I do instead of who I am in Christ?" Guard yourself from subtly allowing cultural convictions to take the place of your identity in Christ. Ground your identity in the gospel and your practice will be more redemptive and more honoring to the Lord.
Read the whole thing.