Petroleum Engineering or Doctor??

only you can answer this question. what will make you happy the most being a doctor or being an engineer? when i was about to choose my course before... my dad said i should take up nursing cause it's in demand that time, and my mom said its good if i took up Hotel and restaurant management, cause she had a restaurant and i can help a lot if i took up that course but thank God my mom and dad let me decide what i really wanted to be then i took up Business Management that's really what i want for some reason, i have this little business and still i'm working on a company to gain much experience and knowledge....