I tell everybody that do the work which you love, which you are fascinated about, which you are passionate about, which you enjoy the most. Then only you can do justice to it and you would be successful.
My perspective to the whole thing

 See that the work you do has to be done with passion. Then the pt of carrying burden does not arise nor does it seem like a burden.
Passion= Zeal, Enthusiasm, Enjoyment, Pleasure

A  Postulate :

Life = Hobby = Work

1. Hobby is meant for relaxation so if your work is your hobby then you are always relaxing and resting

• Hobby = Relaxation + Rest
• so if Work = Hobby
• then Work = Relaxation + Rest

• Enjoy = Hobby and Hobby = Work (1)
• then Work = Enjoy