....and after browsing this board, you decided this would be a good place to ask about it.
Well, I'm sure you'll get plenty of answers, here we are all experts about anything and everything related to breathing underwater, so get ready to take notes.
Many factors will dictate how succesfulyou are as a commercial diver. Are you planing of working inland or offshore? Look for work aT a national or multinational company? Which nation? Get training from a school or follow an internship? If from a school: a big one or a small one? Are you handy with tools or does tighting a screw requires a google search? There are about 836 more questions that would help define for you how good or bad this commercial diving can be.
Good luck.