As my 9th grade social studies teacher once said, there is no such thing as a free lunch. EVERYTHING comes at a cost. If you want to find success in any one area of life, it will be at the expense of another. Want to be lean and physically fit? That will cost you time, energy, and freedom to an extent. Want to be successful in your career? Be prepared to give up time with friends and family, and likely your health. One of the most important things you can do for yourself is determining not only what you want, but what you're willing to suffer for. What are you willing to sacrifice for?