Okay, this question is something that you should answer yourself, as only you will be fully aware of your commitment levels and your determination when it comes to anything regarding losing weight or staying healthy. Setting performance oriented goals is a personal thing entirely, and you should make sure that you utilize your commitment to the maximum without pushing your body over the extreme over these issues. Set weekly targets and goals, so these will make you feel good as and when you accomplish them. You will stay motivated and carry on without giving up and losing heart in the process.