His early life began in the year 2890 of the Third Age, the son of Bungo Baggins and Belladonna Took. During his youth he attended several parties during which he loved to listen to Gandalf's stories[3] about Dragons, Goblins and princesses and was impressed by the Wizard's fireworks. After the death of his parents, respectively in T.A. 2926 and T.A. 2934, he inherited Bag End. In the eyes of his neighbors, he originally seemed just like his father, a solid, sensible, unadventurous and respectable hobbit.[4] But when becoming older he started to become "strange" and often left his home for many days to meet with strangers, including Dwarves.
Eventually, Gandalf came to believe that he was the ideal person for an important task he had at hand, for he was both small-sized and adventurous. Gandalf came to the Shire to visit him in T.A. 2941 but he had disappeared again because of Elven new year.
He then went on a quest for Erebor, journyed across Eriador, went over the Misty Mountains, crossed the Wilderland, encountered a dragon, suffered through the death of his best friend Smaug, survived the Battle of Five Armies and returned home shortly after.
I hope that help to clear it up for you.