Is can't in your vocabulary?
Isaiah 64:4 - "From of old no one has heard or perceived by the ear, no eye has seen a God besides you, who acts for those who wait for him."
God doesn't want us to focus on what we can't do, but what He can do through us.
For those of us who have kids, we've heard it over and over again. "I can't." We always encourage our kids not to use "I can't," but "I can." God wants the same thing from us.
Quote from Rick Warren: "It's the Holy Spirit's job to produce Christ-like character in you."
This Christ-like character is formed in the choices we make. We should be trusting that God's spirit in His power will overwhelm us when we choose to do the right thing in situations.
Say "I can, do all things through Christ that strengthens me!"