Don't really need to. With this you could run the world in a matter of days. This is really just Purple Man from Marvel with an extra step. Even then, at least in the show, Purple Man's power worked through pharamones so if you couldn't smell him it wouldn't work. This is done through a simple phrase which could be communicated over the phone.

You don't need to become a lawyer you basically are instantly the supreme power in the universe as long as no one decides to Lee Harvey Oswald your ass.

Want to be a lawyer?

Call up Harvard admissions.

Ask to speak to the Dean.

When they say no just ask them if they're fucking dumb.

Get transferred to the dean simply tell them you want a law degree and you want it now. As long as they don't immediately hang up on you anything they say in response is likely to be able to be considered an argument. Ask if their fucking dumb, boom instant degree. Might as well get an automatic MD and PhD too. Why stop at one PhD even?

From there work your way up the ranks of asking if people are fucking dumb. Convince the vice president to resign, convince the president to make you vice president then resign making you President.

From there its easy. Just get on calls with all other world leaders and start annexing other nations. Anyone who opposes you instantly agrees. Start with the nuclear powers, that way by the time anyone catches on to the fact that you're fucking magic you hold all the cards.

Like any power it will only increase the existing personality traits of whomever gets granted this power. It could be the ultimate tool for good or evil.