The love of what you do, combined with your belief in what you do, will not determine your success. It will determine how hard you will work and how dedicated you will be to achieving it. Success just shows up from there.

This quote is saying that if you truly love what you do, and you have faith in yourself to do it well, it will motivate you to work really hard and stay devoted to getting what you want. This level of effort and dedication will set you up for success, regardless of the outcome. Success may then come if you take the right actions, but it may not come any easier by simply loving and believing in what your doing.