Well, the first step is acknowledgment, so you're already on the right track! Honestly though, everyone makes mistakes. Nobody is perfect! So now that you are aware, and you want to change, start by saying this simple prayer every morning, slowly and sincerely:
"God, grant me strength and grace to overcome sin and temptation, and to achieve your will today."
I've read that God knows exactly how you will be tempted everyday, and He has all the Grace you need ready- all you have to do is ask for it!! <3