The good news is that successful Realtors come in all colors, sizes and personality types. The bad news is that it is difficult to predict which will be 'successful' and which won't make it to their 2nd anniversary in the business.
Here is the best advice that I can give you: get up, get dressed, go to work.
In other words, treat it like a REAL JOB. Set your alarm, beat your manager in to the office in the morning, dress sharp, listen intently to the experienced agents. If you do these things, you will be ahead of 90% of the other agents out there and those experienced agents/managers will send business your way to encourage you (I know that I always send a hard working rookie business whenever I can because I want to see them succeed).
Plan to have little to no income for 6 months, maybe more. Don't spend a lot on advertising initially but instead tell everyone you know and meet that you are actively building your business and ask them 'who do you know that is getting ready to buy or sell a home?'.
Pick up the phone and start making phone calls. Friends, family, classmates, former co-workers. Expired listings, for sale by owners, absentee owners, cold call a neighborhood.
Best of luck to you, Johnny! It is a career that rewards those who work their tail off. : )