I am a lawyer. I practice law and work as a barrister. Have you ever needed a lawyer?
I have not.
I work daily with the practical application of law and legal theories. It's a lot of fun. 
Is a barrister a special type of lawyer? I've never heard that term before.
Yeah, they are a  lawyer in common law jurisdictions. So we work on specific cases. 
Typical criminal cases or civil?
It deals with judicial decisions of courts and similar tribunals. it's a little complicated but does that make sense? 
Yes. What do you like to do in your free time?
the interests of those who hire lawyers to perform legal services.
The role of the lawyer varies greatly across legal jurisdictions, and so it can be treated here in only the most general terms.
Terminology.
In practice, legal jurisdictions exercise their right to determine who is recognized as being a lawyer. As a result, the meaning of the term "lawyer" may vary from place to place. Some jurisdictions have two types of lawyers, barrister and solicitors, whilst others fuse the two. A barrister is
Lawyer
A lawyer or attorney is a person who practices law, as an advocate, attorney, attorney at law, barrister, barrister-at-law, bar-at-law, canonist, canon lawyer, civil law notary, counsel, counselor, counsellor, solicitor, legal executive, or public servant preparing, interpreting and applying law, but not as a paralegal or charter executive secretary. Working as a lawyer involves the practical application of abstract legal theories and knowledge to solve specific individualized problems, or to advance