Everyone experiences complacency from time to time. We get moving on goals and whether we are doing well or not, we get complacent and stop focusing correctly. Don't let that derail you.
Stay on top of the goals you set. Keep track of how you are doing. If asked you should know exactly where you stand. If complacency hits, take care of it by refocusing on your goals. Don't let complacency take you off your planned actions.
If you miss a day at the gym, brush it off. Make sure you get back there the next day. Go back to breaking things down into smaller segments. It will make all the difference in the world. Smaller goals are easier to achieve and achieving goals will spur you on more than you can imagine. The motivation that comes from completing several small goals is amazing.
Be realistic with yourself. Sometimes complacency happens because you've set goals that you cannot achieve. That is why we discussed reassessing goals a few days ago. If you have not read that lesson please go back now and review it. Take an honest inventory of your situation. Don't be a victim, but don't be dishonest with yourself either. Reassess things and then stay on top of them and you are on your way!