Hobbies and career interests are often confused among people in conversations. People see others who are very good at a certain hobby and claim that they will grow up to become a professional in that field (example, they see a kid who plays the guitar very well and say, “He will grow up and become a guitarist”). We usually think that a person who is well with a hobby will eventually grow up and pursue it professionally, given that there are no parental constraints.
We live in this huge misunderstanding that hobbies will eventually turn out to professions that one will be good at. We live most of our life believing in a certain concept only to find out that it was wrong all along, just like the movie Karthik Calling Karthik (sorry for the spoiler).
Here is a table that will help you differentiate between a hobby and a career interest:
For more such kind of Professional help: