I like you went into a family business (not as a lawyer) where it was an expectation that you could do what you wanted as long as it was the family business ; )
As with anything in life if you do not have a passion for what you do you will never be any good at it /
You will end up as an ok lawyer who cannot wait to get away at the end of the day and do things which do interest you !
I have a friend who chucked in a well paid law job in the city to fly for crumbs in corporate aviation!
At your age and the law qualification already under your belt you have time to take 5 years out chasing your aviation dream and see where it takes you ?
Who knows you may go back to law with a fresh view?
As others have said the other option is to be an ok lawyer nothing great but making enough to fly your own aircraft
Pace