If you've never heard of David Platt, I encourage you to Google his name. You will be challenged...maybe even uncomfortably challenged by the message he gives and LIVES.
Here is a message he delivered called "Casual Acceptance or Absolute Surrender?" Quite frankly, it has messed me up...in a good way. The videos are around 12-14 minutes each and very very much worth the time. I don't see how you or I or anyone can be the same person after taking this message truly to heart and action.
I pray the Holy Spirit will speak to your heart as you seek Him.