I think he works hard to become a Pokemon Master,but he gets stronger along the way,each episode,it seems he learns something new and gets stronger,he met and made new friends and even some enemies (though the Enemies are Mostly Antagonists),he had good times and bad times along the way..and things like that can a person stronger in life,as for Pokemon Training I think he does it because it's something he loves to do,and to become A Pokemon Master!
