@Lien Vuong Got it right. Build relationships right away. Talk about what you do, not only to your Sphere of Influence, but to total strangers. Something I do is talk to drivers when I'm in an Uber/Lyft and then I leave my business cards at the end of the trip. But this shouldn't come out of a place where you are trying to sell them, it's about adding value to people, talking about your passion in real estate, the market etc etc.
The second thing I would add to that - start studying your market right away. As a new agent, you are competing against agents who have been in the business longer than you. Pick a market, meaning city, county, or a place that you want to focus on. Study the hell out of it - market trends, housing prices and trends. Know it like the back of your hand. At the end of the day, it doesn't matter if you are young or old, only that you can show that you know what you're talking about and that your clients can trust you to get the job done.
Best of luck to your RE journey!