Doing what you love is one key to a fulfilling life.
You will put more effort and focus into what you love and this will pay dividends over time.
What you love today may not be what you love tomorrow. Maintaining this passion will require growth. An activity that you love will lose its appeal unless you are growing in that activity.
It is in the growth of the activity where you discover the love and passion for the activity. The growth is not always linear, the growth can take a windy path.
Always take the time to discover what you love as this is always a moving target.