What field of work should I go into?

I have been thinking for a little while about what field of work I should go into. I was contemplating these two choices: advertising and structural engineering.

I’m very good with making slogans and thinking outside of the box with advertising. While on the other hand I love math and could easily get a job in structural engineering.

From what you can decipher from me through our experiences, what would be the better line of work? Also any suggestions for other jobs would be appreciated.