Well the reality is you've been in University since you were 17 and not to be insulting, you don't know crap about anything. How do I know, because I was the same way.
Sounds like you found something you think you'd enjoy. Now the key is to research that position.
1. Find someone in the job already and talk to them
2. Figure out the lifestyle that the best, average and lowest guys in that profession live
3. Think about where you wanna live and if that location requires your chosen profession
Just some basics...and you're already ahead of the game because you're asking on here.
PS: Don't become a draftsman...not one of the guys on here enjoys their job.